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The market · page 1 of 2 · updated September 2026

Price per carat

549 quoted prices of this kind. Half of the US ones fall between $100 and $836, median $250. None of them is a purchase. This page holds the 400 quoted from $0 to $900.

Page 1 of 2 · Next

PriceStoneCaratShapeWhereYearWhat was quoted
C$0 to C$0Diamond, lab or natural not said–--2024Buyer's per-carat value guess for the same low-quality treated stone
$0 to $1Diamond, lab or natural not said–--2024Another buyer's per-carat ceiling estimate for the same stone
$0 to $1-–---Another buyer's opinion of fair value for this rough garnet parcel, well below the $5/ct asking price
£1 to £1,000-–--2025Low-grade Ethiopian opal can run about this little per carat, versus thousands of pounds per carat for top-grade Lightning Ridge black opal
$2-–--2025Lab sapphire (not diamond), quoted at $2.50/ct, with a 5+ carat stone costing $12.50
$2Lab-created coloured stone–---Lab sapphires now priced this low per carat, called one of the most abundant lab gems.
$3 to $10Natural diamond14.01 ct--2026Another per-carat estimate for the same stone, citing washed-out pinkish color and near-opacity
$4Diamond, lab or natural not said–--2025Industrial-grade diamonds said to cost about $3.50 per carat
$4 to $30-–--2026If the mystery stone is citrine, typical modern-piece value runs about $4-$30 per carat
$5-61 ct---61 ct parcel of rough Malaya garnet (avg. stone size 8-10 ct), described as top quality and super clean, offered at $5 per carat
$5Moissanite–--2023Claims moissanite has become as cheap as $5 per carat, comparing it to cubic zirconia
$5Moissanite–-Knobspin2023Loose moissanite stones reported at about $5 per carat; higher risk of getting a milky stone at this seller.
$5 to $25Other gemstone–---Commercially cut YAG (yttrium aluminum garnet) from China typically runs this much per carat, except rare high-end formulations
$5Diamond, lab or natural not said–--2024Buyer's threshold: paying more than this per carat for scam-grade treated stones like this one means you were cheated
$5 to $10-9.94 ct---A buyer's fair-price guess for a 9.94ct natural unheated yellow star sapphire, not a sale
$5 to $7Natural diamond14.01 ct--2026Community per-carat estimate for a low-grade, heavily included heat-treated ruby cut to maximize weight
$5Moissanite–--2026Buyer said loose moissanite usually runs around $5 per carat direct/wholesale, sometimes under $1 per carat in bulk deals
$6Moissanite1 ctround-2023Buyer says $6/carat is achievable for round moissanite; their own dark gray 1ct pre-set stone cost under $30 total
$7Moissanite–---Rough (uncut) moissanite cost cited, not even wholesale pricing
$10Lab-created coloured stone–--2025Another buyer's per-carat estimate for lab-grown emeralds.
$10 to $15Lab-created coloured stone–--2025One buyer's estimate of fair per-carat value for lab-grown emeralds.
$10-–--2025Buyer's estimate that a synthetic ruby is worth about $10 per carat, with the gold setting valued for its metal weight
$10 to $50Lab-grown diamond–---Lab-grown sapphire rough costs roughly $10-50 per carat depending on manufacturer, process and color
$10 to $60Moissanite–--2025Colorless moissanite, price depends on shipping and quantity bought
$10Other gemstone–--2026Typical retail per-carat price cited for clear faceted amethyst, citrine or ametrine
€10Moissanite1 ct--2026By comparison a 1ct moissanite is only about EUR10
$12-–--2025Asking price for loose rhodolite garnet stones (1.2-2.5ct each) sold in person by a local dealer, not set into a ring
$18Natural diamond–-DiamondRough.net2025Rough (uncut) single-stone natural diamonds listed starting at $18 per carat on this dealer site
$20Moissanite–---Buyer says basic-cut moissanite can run under $20 per carat, though specialty cuts and some vendors charge more.
$20 to $50Lab-grown diamond–--2025UK jeweler's rough production-cost range for lab-grown stones
$23No stone (plain band)–--202618k gold priced around $115/gram means the gold equivalent of a 1ct diamond's weight (0.2g) costs about $23
$25Moissanite–round-2022A quote the writer received for round moissanite, per carat.
$25Moissanite–--2022Another brief answer to the discussion's per-carat cost question.
$25 to $30Lab-grown diamond–---Estimated production cost (growing, polishing, certifying) for a lab diamond before retail markup
$25Lab-grown diamond–--2026Says $25/ct or more from a pawn shop or jeweler for the stone alone counts as a strong offer
$25 to $50Lab-grown diamond–--2026Buyer typically pays about melt plus $25/ct for certified lab stones and resells around melt plus $50/ct
$25Lab-grown diamond–--2026Buyer reacts to a cited $25-per-carat resale value for lab diamonds as shockingly low
$30 to $70Lab-grown diamond–--2024Rough overseas per-carat range for an included lab emerald; a precision cut runs more than double that
$30 to $60-–--2026Buyer claims to be able to source similar pink sapphires locally at this per-carat price
$40 to $100Moissanite–--2023Typical per-carat cost from Chinese vendors, per the writer's community experience
$40Lab-grown diamond–--2024A forum buyers claims lab rough costs growers in China or India about $40 per carat including cutting and shipping
$40 to $75-–--2025Lab-grown (synthetic) sapphire guide price, varies by sourcing
$40Moissanite–-Tianyu Gems2026Wholesale quote for loose moissanite by the carat, cited as evidence the stones themselves are cheap and gold cost drives the ring price
43Moissanite1 ctemerald-2025Cost for a 1ct emerald-cut moissanite stone alone in the writer's home country, before gold setting costs
$50Moissanite–--2023The writer's rate for precision-cut moissanite from the same vendors, for comparison
$50Lab-grown diamond–--2024Claims lab stones are manufactured for under this per carat before big retail markups
$50 to $100Lab-grown diamond–---The same dealer says current resale value for lab diamonds runs in this per-carat range
$50Lab-grown diamond–---The person asking says lab diamonds now run about $50 wholesale per carat while natural prices rose only slightly and gold sits at an all-time high
$50 to $200Lab-grown diamond–--2025Says lab-grown diamonds are now running about $50-$200 a carat
$50 to $100Lab-grown diamond–---Writer's supplier sells lab diamonds in this per-carat range, calling them worth almost nothing.
$50 to $100Lab-grown diamond–--2025CVD-grown, HPHT-treated lab melee out of Asia/India priced around $50-100 per carat
$50 to $100Moissanite–--2025Colored moissanite guide price per carat
$50Lab-grown diamond–--2026Says getting even $50/ct in a private sale on top of gold spot price would be a best-case outcome
$50Lab-grown diamond5 ctradiant-2025Secondhand report that a friend bought a 5ct radiant lab diamond at about $50 per carat wholesale-level pricing
$60Moissanite–---Current high-quality moissanite per-carat price cited
$60 to $80Lab-grown diamond–--2026Lab diamond growers reportedly selling stones today around $60-80 per carat
$70Lab-grown diamond–--2025Buyer shared an industry lab-grown diamond price list benchmark
$70Lab-grown diamond0.5 ct--2026Buyer says US-facing websites sell lab-grown half-carat stones in this range
$75Lab-grown diamond–---A reader calculated the original lab sapphire purchase at about $75 a carat, with the buyer paying even less
$75 to $200Lab-grown diamond–---General per-carat price range for lab diamonds depending on size, quality and cut
$75 to $100Lab-grown diamond–--2026A diamond broker says buyers can walk out paying this per carat, though it often trades off grading accuracy or cut quality
$80 to $100Moissanite–-overseas vendors2022Writer's rough estimate for per-carat moissanite pricing from overseas sellers.
$80 to $100Diamond, lab or natural not said–--2025Says stones like the one discussed trade for roughly $80-100 per carat wholesale
$80 to $150Lab-grown diamond–--2025Says lab diamond prices have dropped to about $80-150 per carat easily
$80 to $150Lab-grown diamond–---Buyer says lab diamonds can be bought around $80-150/carat via eBay and auction houses for profitable resale
$80Lab-grown diamond–--2025A good wholesale price estimate for small lab-grown melee diamonds
$85 to $200Lab-grown diamond–--2026Retail per-carat lab diamond prices commonly cited from about $85 up to $150-200 before discount codes.
$90Lab-grown diamond–---Writer says lab diamond wholesale price is now about $90 per carat
$90Lab-grown diamond–--2026Self-described dealer's wholesale sourcing cost for ideal-cut lab stones
$99Lab-grown diamond–---Claimed manufacturer price for 4 to 8 carat lab diamonds broadly
$99Lab-grown diamond–--2024A Vegas gem show advertised lab diamonds at $99/carat, but limited to one low-spec stone per customer, not a real bulk price.
$100 to $200Lab-grown diamond–--2025The asker's own research found lab-grown diamonds commonly priced $100-200 per carat
$100 to $200Lab-grown diamond–--2025The asker's prior expectation for lab diamond per-carat cost, which turned out far below what large clean stones actually list for
$100 to $125-–---An emerald specialist's advised ceiling price for a moderately transparent, moderately oil-treated Zambian emerald like the one the person asking was considering
$100Lab-grown diamond–--2023A Chinese vendor's special deal on salt-and-pepper lab melee, not representative of normal pricing
$100Lab-grown diamond–---A critic claims lab diamonds cost about this much per carat wholesale before markup, disputed by other buyers as too low
$100Sapphire–--2024Buyer's estimate of a fair per-carat price for a commercial-cut stone like this
$100Moissanite–--2024North American vendors reportedly price USA-made moissanite around $100/carat, marketed as a premium over Chinese/Indian-cut stones
$100 to $500Moissanite–--2024Buyer says retail moissanite typically sells for about $100-$500 per carat despite being a cheap lab-made synthetic
$100Lab-grown diamond–--2024Buyer says lab diamonds are going for as low as $100 per carat
$100 to $120Lab-grown diamond3 ctround-2024Says lab rounds in collection VS clarity have recently priced around this per carat
$100 to $300Lab-grown diamond–---Lab-grown stones/melee now priced in the low hundreds per carat, per buyer
$100 to $200Lab-grown diamond–--2025A buyer said lab diamonds now run about $100 to $200 per carat if upgrading from moissanite
$100 to $200Lab-grown diamond–--2025A friend who is a diamond dealer says trade magazines report lab diamonds now cost $100-200 a carat, the lowest in memory, fueling interest in 8+ carat stones
$100-–---Calls this the standard industry rate for stone-setting labor
$100Lab-grown diamond–--2025At a Hong Kong diamond exhibition, vendors offered 1-5ct IGI-certified lab diamonds for under $100 per carat.
$100Other gemstone–--2025Suggested reasonable per-carat rate for a common, well-cut colored gemstone, before adding cert and shipping
$100Lab-grown diamond–--2025Says certified lab diamonds run around $100 a carat from the right vendor
$100 to $120Lab-grown diamond1 ct--2025Buyer says they typically pay about $100-120 for a 1ct D VS1 ideal-cut lab diamond
$100Lab-grown diamond–--2025Lab-grown diamonds produced in China said to now cost about $100 per carat
$100Lab-grown diamond–--2025A buyer cited lab diamonds as available for around $100 per carat, used to argue a natural diamond conveys more effort and expense
$100 to $200Lab-grown diamond–---Cited going rate for lab diamonds per carat, cheaper deals possible via BST/labsales-type communities
$100 to $200Lab-grown diamond–---Loose lab diamonds bought direct from a supplier, vs about 10x more once set and sold in-store
$100 to $200Moissanite–---Loose moissanite bought direct from a supplier, vs about 10x more once set and sold in-store
$100Lab-grown diamond–---Wholesale lab diamond price per carat, per this buyer
$100Lab-grown diamond–---Wholesale lab diamond price per carat, per this buyer
$100 to $150Lab-grown diamond–--2025Minimum per-carat floor for lower-quality lab diamonds, rate compounds with size
$100Lab-grown diamond–--2025Buyer cites lab diamonds costing about $100 a carat as a reason to prefer them over CZ
$100Lab-grown diamond–---Buyer buys lab diamonds around $100/carat retail and resells profitably via The RealReal
$100 to $500Lab-grown diamond–--2025Writer's prior understanding of loose lab diamond pricing by size/quality, before a recent GIA grading change
$100Lab-grown diamond–---Rule of thumb for overseas vendors: about 100 for a 1-carat stone, roughly 300 total for 2 carats, 600 total for 3 carats
$100 to $200Lab-grown diamond–--2025Guide price for colorless lab diamonds; anything pricier called a ripoff
$100 to $200Lab-grown diamond–--2025A buyer said lab diamonds run about this much per carat depending on stone size
$100Lab-grown diamond–---Wholesale price commonly cited for lab-grown diamonds
$100Lab-grown diamond–---Wholesale lab diamond price varies by aspects; retail typically marks up 200-300% over this
$100 to $400Lab-grown diamond–--2026Typical per-carat cost sourcing lab diamonds online, per this writer
$100 to $250Lab-grown diamond–---Cited online per-carat price range for lab diamonds at time of comment
$100Lab-grown diamond–--2026Hypothetical low-end lab diamond wholesale price used for comparison against gold's per-weight cost
$100Lab-grown diamond–--2026General wholesale rate cited for lab diamonds
$100Natural diamond–--2026Typical price paid for small 2.8mm melee diamonds used in tennis bracelets, per this buyer
$100Lab-grown diamond–--2026Buyer says lab diamonds now run about this much per carat from online vendors
$100Lab-grown diamond–-Whatnot-IGI-certified lab diamonds bought at live auction on Whatnot averaged about $100 a carat
$100Lab-grown diamond1.04 ct-Starsgem2026Excellent-cut lab diamonds run about $100+/carat; a pair of ~1.04ct D VVS2 studs cost $120 per stone, under $600 total with shipping
$100 to $150Lab-grown diamond–---D/E/F VVS lab stones run about this much per carat
$100Natural diamond1.48 ctemerald-2026Buyer's retail ceiling estimate for this stone's per-carat value given its light color and inclusions
$100-–---Minimum per-carat cost added for a 1ct stone on top of the setting price
$100 to $150Lab-grown diamond–---Overseas vendor per-carat range cited as fair for a stone like the asker's; even $500 called high
$100 to $150Lab-grown diamond1 ct---Approx cost for a 1ct loose lab diamond bought direct from an overseas vendor
$100Lab-grown diamond–--2026Lab-grown diamonds said to wholesale around $100 per carat now, making a jump from 1ct to 2ct-plus a small price difference
$100 to $200-–-Aurelline-Buyer's recommended per-carat price range at this seller; no personal purchase confirmed
$100 to $200Lab-grown diamond–---Current lab diamond per-carat price range cited by a second buyer
$100 to $200Lab-grown diamond–-Aurelline2026Vendor named for lab diamonds priced about $100-200 per carat.
$100 to $200Lab-grown diamond–--2026Buyer says lab diamonds generally run $100-$200 per carat unless it is a specialty cut
$100 to $200Natural diamond–--2026Buyer says low-grade treated/irradiated black diamonds typically run this much per carat
$100Lab-grown diamond–--2026Writer says she pays under $100 per carat for excellent-cut lab diamonds
$100 to $120Lab-grown diamond–--2026Buyer says an excellent/ideal cut D VVS2 lab stone runs about this much per carat
$100Lab-grown diamond1 ctroundChinese livestream sellers20261ct round E uncertified lab stone bought loose via Chinese livestream sale
$100Lab-grown diamond–--2026Says lab diamond melee runs about $100 per carat right now
$100 to $150Lab-grown diamond–---Suggested fair per-carat price for a stone this size
$100 to $120Lab-grown diamond–---Lab stones from Chinese vendors run about $100-120 per carat, per another buyer
$100 to $200Lab-grown diamond–--2026Custom lab-diamond rings ordered from Chinese vendors; about $30 USD express shipping to Singapore, roughly a month to make
$100Diamond, lab or natural not said–---Says this per-carat setting labor rate at a jewelry store is about right, covering overhead and liability
$100 to $200Lab-grown diamond–---Buyer says lab-grown diamonds now run about this much per carat, making large lab stones widely affordable
$100 to $150Lab-grown diamond–-Luvansh or Aurelinne2026Says reputable online vendors sell lab diamonds around this per-carat price
$100Lab-grown diamond–--2026Buyer says current market worth of lab diamonds is around $100 per carat, with many sites charging more
$100Lab-grown diamond–---Wholesale lab diamond melee priced around this per carat, per a quote relayed from an Instagram jewelry vendor
$100Lab-grown diamond–-Luvansh/LabGrownDiamonds-Typical per-carat pricing at these online sellers, though it takes work to find a good stone
£100Lab-grown diamond–--2026Buyer said they pay under £100 per carat for large lab diamonds, calling lab diamonds cheap 'flash for cash' rather than an investment
$100 to $150Lab-grown diamond–---Cited consensus good retail per-carat price
$100Lab-grown diamond–--2026About $100 per carat cited as a decent price for loose lab diamonds bought online
$120-28 ct--2024Buyer paid $120 per carat for a 28-carat rough tourmaline lot, asking the community if that was a fair deal
$120Lab-grown diamond–---Starting per-carat price for a 1ct lab diamond, rising with color, clarity and shape.
$120Lab-grown diamond–---Says lab diamonds at about $120 a carat make natural diamonds a bad deal by comparison
$120Lab-grown diamond–---Estimate for lab stones of similar quality, used to argue the $1,600 price is mostly paying for the gold
$125 to $695-10.8 ct--2024Reference value range for a clear aquamarine, color quality pulling it toward the low end
$125Lab-grown diamond–-Luvansh2024Lower carat weight diamonds at this vendor priced as low as $125/carat, near a roughly $60/carat production cost cited for China
$125Lab-grown diamond–---Same contact's lab melee price; stones under 3mm priced similarly
$125 to $175Lab-grown diamond–oval--Estimated per-carat price for a 3-4ct oval with good specs
$129Lab-grown diamond7.83 ct--2026A dealer said they had just sold a 7.83ct G VS1 lab diamond for $1,010, about $129/carat
$140Lab-grown diamond2.85 ct-Luvansh2025Two matched 2.85ct F VS1 lab diamonds bought unmounted for $800 total during a 30% off sale, about $140/carat
$142Lab-grown diamond1.37 ctprincessLuvansh2025Two IGI-certified 1.37ct D VS1 princess lab diamonds bought for $389 total during a 30% off sale, about $142/carat
$147Lab-grown diamond1 ctroundChinese livestream sellers2026Same specs as uncertified listing but with IGI certification, same livestream channel
$150Lab-grown diamond–---Chinese and Indian wholesalers seen pricing lab melee near this level, well under Lightbox's cut price.
$150 to $300Lab-grown diamond–--2024Lab diamond per-carat prices have dropped a lot over the past year
$150 to $200Lab-grown diamond–--2024Lab diamond prices have plummeted to about this range per carat
$150 to $200Lab-grown diamond–--2025Further price drop cited for lab diamonds per carat versus the prior estimate
$150 to $250Lab-grown diamond–--2025Buyer's fair-price benchmark for lab diamonds per carat
$150 to $300Lab-grown diamond–---Says lab diamonds now run about $150-$300 per carat depending on clarity
$150 to $200Lab-grown diamond–---Buying lab diamonds direct from online stores runs about this much per carat, above wholesale but far below typical retail store prices
$150 to $200Lab-grown diamond–---Typical per-carat range for lab-grown diamonds given in reply to the asker's listing.
$150 to $200Lab-grown diamond–---Brick-and-mortar stores can't profitably sell at this per-carat price; large GIA-certified stones scarce at that level.
$150Lab-grown diamond–--2025Black lab diamonds guide price per carat
$150Lab-grown diamond–--2025Typical price for loose lab diamonds; setting labor separately runs $60-100 per carat on top
$150 to $200Lab-grown diamond–--2026Typical retail per-carat price buyer gives for lab diamonds under about 3.5ct
$150 to $300Lab-grown diamond–--2026General per-carat price range for lab diamonds depending on specs, from an experienced buyer
$150Lab-grown diamond–--2026Buyer says excellent quality lab diamonds run about $150 per carat online
$150Lab-grown diamond–--2026Buyer said excellent lab diamonds can now be bought for about this much per carat due to mass manufacturing
$150Lab-grown diamond–---From a good vendor in India, lab diamond price can go this low per carat
$150Lab-grown diamond–---Buyer's own rule of thumb: avoid bidding above this per-carat price in TikTok Shop auctions
$150 to $250Lab-grown diamond–--2026Wholesale per-carat range cited for high quality lab diamonds from Chinese/Indian source vendors marketing to US buyers
$150Lab-grown diamond–--2026A seller offers this per-carat rate directly to another buyer here
$150 to $200Lab-grown diamond1 ct--2024Certified triple-excellent DEF color VS1-VS2 clarity 1ct lab diamond runs about this per carat
$170Lab-grown diamond–--2026Buyer's observed per-carat price for lab-grown diamond stones
$175Lab-grown diamond–roundloosegrowndiamond2025Bottom-tier CVD stones (roughly 1-1.1ct, VS2-SI1, non-ideal proportions) listed around $175/ct on loosegrowndiamond.com, many showing graining
$180Lab-grown diamond–---Buyer claimed lab diamonds trade around this per-carat price and are declining in value, disputed by others here
$180Lab-grown diamond3 ct-Calavera New York2026Bought a 3ct VVS1 lab diamond from Calavera New York for $540 total, about $180/carat
$200 to $400-–--2021Slower flux-fusion lab corundum (ruby/sapphire quality) runs about $200-400 per carat
$200 to $400Moissanite–--2022Typical moissanite per-carat price range; less from overseas drop-shippers, more for hand cuts
$200Lab-grown diamond–--2024Same buyer said online retailers' wholesale cost for lab diamonds like these runs around $200 per carat.
$200 to $400Lab-grown diamond–--2024Typical range for good lab diamonds at small direct sellers like Debebian's, Luvansh, stonealgo
$200 to $400Lab-grown diamond–---Writer's estimate of the going rate for lab diamonds
$200 to $400Lab-grown diamond–--2024General claim about current lab diamond pricing per carat
$200 to $300Lab-grown diamond–--2024Current price for VS quality lab-grown stones from Chinese vendors
$200-–--2024Says this pale grade of aquamarine typically runs about this much per carat at most, sometimes less
$200Lab-grown diamond–---Argues lab diamonds trade around this per-carat rate, meaning the person asking overpaid at roughly 5k for one stone
$200 to $300Lab-grown diamond–--2025Comparison figure: top quality lab diamonds online run $200-300 per carat
$200Lab-grown diamond–---Buyer's estimate for typical lab melee cost, used to argue the linked ring is overpriced for SI clarity
$200Lab-grown diamond–--2025Cited as roughly the going per-carat cost for lab-grown diamonds generally
$200Lab-created coloured stone–---Price cited for colored lab diamonds per carat, as an alternative to the alexandrite/moissanite/sapphire combo
$200Lab-grown diamond–--2025Cites $200 per carat as the going market rate for certified eye-clean lab diamonds
$200Lab-grown diamond–--2025Says excellent lab diamonds run about $200 a carat; setting adds up to roughly $1000 more depending on metal
$200 to $300Lab-grown diamond–--2025Lab diamonds have significantly dropped in price, now roughly $200-300 per carat
$200 to $400Lab-grown diamond–---General per-carat price range cited for lab diamonds from online retailers
$200Lab-grown diamond–--2025Buyer's estimate of current lab diamond per-carat pricing
$200Lab-grown diamond–---Price achievable for lab diamonds from recommended online vendors using price-matching.
$200 to $300Lab-grown diamond–-Calavera and Ruby Harper2025Cheapest loose-stone options run about $200-300/carat at Calavera and Ruby Harper, totaling roughly $300-400 for a 1.5ct stone.
$200Lab-grown diamond–-Calavera2025Cited price of about $200/carat for lab diamonds at Calavera.
$200Lab-grown diamond–--2025Starting per-carat price cited for nice DEF/VVS graded lab stones
$200 to $250Lab-grown diamond–--2025Reasonable per-carat starting range for a good-spec 1ct lab stone in round or princess shape
$200Lab-grown diamond–--2025Cited lab-grown diamond wholesale price, about $300 total for a 1.5ct stone matching the asker's size
$200Lab-grown diamond–---Lab gem per-carat estimate from this buyer
$200 to $300Lab-grown diamond–---Buyer's estimate of true lab diamond cost per carat
$200 to $300Lab-grown diamond–--2025Market price for lab diamonds generally, per carat
$200Lab-grown diamond–--2025Buyer estimates lab-grown diamonds run about $200 per carat, arguing large lab stones are affordable and not deceptive
$200 to $500Lab-grown diamond–--2025Says lab diamonds run about $200-500 per carat depending on color and clarity
$200Lab-grown diamond–---General per-carat rate cited for lab-grown diamonds.
$200Lab-grown diamond–--2025Estimate for regular colorless lab diamonds
$200Lab-grown diamond–---Cited as the going rate for VVS-grade lab diamonds now
$200 to $250Lab-grown diamond5 ctradiant-2025NYC diamond district wholesaler estimates $200-250 per carat for the stone, plus about $100-105/g gold and $1-1.50 per stone setting/polish.
$200 to $275-–--2025Suggested a fair range of $200-275 per carat for this commercial-grade dark sapphire, versus about $335 per carat asked
$200 to $400Lab-grown diamond–--2025Colored lab diamonds priced up to roughly double the colorless rate
$200Lab-grown diamond–---Rough per-carat price quoted for lab diamonds
$200Lab-grown diamond–---Cites this as the going per-carat rate for lab diamonds, says gold and labor costs are what's rising
$200Lab-grown diamond–---Guessed per-carat rate for oval lab diamonds
$200Lab-grown diamond–--2026Claims good-quality lab diamonds sell for well under $200 per carat
$200 to $300Lab-grown diamond–--2026Good quality lab diamonds run about this much per carat now, per a buyer
$200Lab-grown diamond–-Fiorese-Buyer's estimate of current lab diamond per-carat pricing
$200Lab-grown diamond–---Buyer's rule-of-thumb fair-price guideline for lab diamonds generally
$200Lab-grown diamond–--2026Current rough per-carat lab diamond price cited; gold priced around $5k/oz, so a 2ct 18k solitaire's stone might cost about $500 versus roughly $1k of gold
$200 to $1,000Lab-grown diamond–--2026Buyer says online lab diamond retail typically starts around $200 a carat; pricing near $1000 a carat is over market unless it's an exceptional cut.
$200Lab-grown diamond–---Top-of-line lab diamond per-carat price cited, disputing $3-6k total estimates
$200Lab-grown diamond–--2026Another buyer's lower per-carat estimate, said to apply in a lot of cases
$200Lab-grown diamond–---Disputes the sub's common claim that $200 a carat reliably buys a good lab stone
$200Lab-grown diamond–---Says their larger round lab diamonds cost around $200 a carat with a great cut
$200Lab-grown diamond–--2026Says well-cut, colorless, high-clarity lab diamonds now sell for under $200 per carat, even in larger sizes.
$200Lab-grown diamond–---Current typical per-carat price cited for lab diamonds
$200Lab-grown diamond–--2026Writer says lab diamond prices are now closer to $200 per carat
$200Lab-grown diamond–--2026Lab stones now often cost well under this per carat, a small share of a natural's price; figure is an upper bound
$200 to $250Lab-grown diamond3.03 ctcushion-2026Commonly recommended online vendors' rough per-carat range for these specs; jeweler's $4k quote looked close to a 10x markup from wholesale
$200Lab-grown diamond–---General retail estimate for lab diamonds cited by a jeweler with 50 years of experience
$200Lab-grown diamond–--2026A buyer said 1-5ct lab diamonds can easily be bought for around $200/carat
$200Lab-grown diamond5 ct--2026A base price of roughly $1,000 for 5ct loose lab diamonds, more for nicer cut/color/clarity
$200 to $240Lab-grown diamond5 ct--2026A buyer said 5ct labs run $1,000-1,200 depending on color and quality
$200Lab-grown diamond–---Buyer's estimate for best-quality lab diamonds bought online, well below the jeweler quotes here.
$200 to $300Lab-grown diamond–--2026Says lab diamonds generally sell for about this much per carat on the resale market
$200Lab-grown diamond–--2026Rough resale value per carat for a lab stone on top of the melt value of its metal setting
$200Lab-grown diamond–---General benchmark price for good-spec lab diamonds
$200Lab-grown diamond–--2026Cited current per-carat price for high-quality lab diamonds
$200Lab-grown diamond–-Aurelline2026Says paying more than this per carat is overpaying and points to Aurelline as a fair-priced source
$200Natural diamond–round-2023A diamond buyers' forum round-diamond price guide: under $200/ct gap between M/SI1 and M/VS1 in the 4.0-4.99 ctw range.
$200 to $300Lab-grown diamond–---Predicts lab diamond prices settling around $200-300 a carat regardless of size
$200Lab-grown diamond–--2026Says paying $200-plus per carat for an F color VS2-or-lower stone with a bow-tie via TikTok live auctions is overpaying
$200Lab-grown diamond–---Cited going rate for clear (colorless) lab diamonds
$200Lab-grown diamond–---Cited retail per-carat price
$200Lab-grown diamond–--2026Another buyer says $200 per carat is a more realistic starting point for online lab diamond retail
$200Lab-grown diamond–--2026Buyer's estimate that good-spec lab diamonds start under this per-carat price
$205Diamond, lab or natural not said–--2025Wholesale per-carat price from an LA jewelry district connect, up to about 5 carats before the price rises
$220Lab-grown diamond1 ctasscher--Recent price paid for loose 1 ct lab asscher stones, excellent polish and symmetry
$250 to $350Lab-grown diamond–--2024Writer's general sense of typical lab diamond per-carat pricing seen elsewhere, likely for colorless stones
$250 to $300Lab-grown diamond–-Loose Grown Diamond, Ritani and other sites2024Per-carat price range cited for lab diamonds across several online vendors
$250Lab-grown diamond–--2025Rough cost to buy a replacement lab center stone if reworking a setting
$250Lab-grown diamond–round--Buyer's estimate of the going rate for ideal-cut CVD stones of this grade
$250 to $400Lab-grown diamond3.5 ct--2026Typical retail per-carat price buyer gives for lab diamonds 3.5ct+ or unusual shapes
$250Lab-grown diamond–--2026Real lab diamonds retail online for under this price per carat, per a buyer's cost breakdown
$250Lab-grown diamond–---A self-described diamond buyer says he sources VS+ lab diamonds under $250 a carat
$250 to $350Lab-grown diamond–--2026Buyer's general per-carat estimate for lab-grown stones
€250 to €300Lab-grown diamond1 ct--2026Says a 1ct lab diamond currently costs about EUR250-300 in Europe
$250Lab-grown diamond–--2026Buyer says perfect-cut E color VVS2-or-better lab stones are widely available around this rate
$250 to $300Lab-grown diamond–--2026Buyer's estimate of market price for a near-flawless colorless lab diamond
$250Lab-grown diamond–--2026Claims this is the going per-carat rate for lab diamonds now
$250-32.3 ct--2026Dealer's 32.3ct tanzanite, invested about $7,500, ended up sold at roughly $250 a carat after a buyer backed out of paying
C$250 to C$300Lab-grown diamond1 ct--2026Estimated cost for a 1ct lab diamond sourced online
$250Lab-grown diamond–--2026Buyer says lab diamonds now sell for about $250 a carat while gold stays expensive, so 10k gold saves money
$250Lab-grown diamond1.5 ctemerald-2026Would not pay more than this per carat for a 1.5ct D-to-F color VS1 emerald-cut lab stone
$250 to $300Lab-grown diamond–-Ve and Vile2019Quote for rough HPHT lab diamond material from China, VS clarity DEF color, before cutting; two shipping legs required
$250Lab-grown diamond–--2026Buyer says lab diamond should not cost more than about $250 per carat at retail, even with markup
A$250Natural diamond–roundFacet Lane2026Round brilliant retail pricing quoted at about $250 AUD per carat
$254Lab-grown diamond1.53 ct-Luvansh2025Two loose 1.53ct D VVS2 ideal-cut IGI lab diamonds at $389 each during a 30% off sale, plus a separate $400 setting fee for the earrings
C$270Sapphire–--2022Cited as a much better per-carat price for natural particolor sapphires than the asker's quote
$280 to $350Lab-grown diamond–round--Wholesale range for round lab diamonds from a supplier, about a year before the comment; retail markup around 3x is typical
$290Lab-grown diamond–---Buyer says they are still paying about $290 a carat for their own colored lab diamond
$300 to $400Moissanite–-retail stores2022Same writer's estimate for per-carat moissanite pricing at retail jewelry stores.
$300Lab-grown diamond2 ct--2024A TikTok jeweler's demo wholesale purchase of a 2ct G VS excellent-cut lab stone plus shipping, showing what jewelers pay before markup
$300 to $400Natural diamond–---Melee (under 0.2ct) natural diamonds run this much per carat for average color and clarity
$300Lab-grown diamond–--2024Lab-grown diamond price cited around $300 per carat, making large stones more affordable
$300Lab-grown diamond–--2024Lab diamonds sold by some retailers around $300 per carat, not much pricier than moissanite except at large carat sizes
$300 to $400Lab-grown diamond–-Worthy-Estimated resale rate on the Worthy marketplace
$300 to $400Lab-grown diamond–--2024Typical current per-carat price range for lab diamonds, per buyer
$300No stone (plain band)1 ct--2024Another store charges $3 per carat point for an outside stone, so $300 to set a 1ct stone
$300 to $400Lab-grown diamond–--2024Buyer estimates secondhand lab diamonds typically resell for about $300-400 per carat, varying a lot by carat size and changing quickly
$300Lab-grown diamond–round--Base rate cited for round brilliant lab stones; a well-cut hearts-and-arrows ideal/GCAL8x graded stone costs more.
$300Lab-grown diamond–---Typical price per carat for a lab diamond stone alone, per buyer
$300Lab-grown diamond–---Cited current per-carat price for lab diamonds, used to estimate a 2ct version for under $2,000
$300Lab-grown diamond–---Says lab diamonds can be found online for well under $300 per carat
$300 to $700-–--2025Small included natural alexandrite/chrysoberyl typically runs $300-700 per carat, sometimes less
$300Lab-grown diamond–--2025Buyer says lab diamonds currently run under $300 per carat
$300Lab-grown diamond–--2025Retail benchmark price for lab diamonds per buyer
$300Lab-grown diamond–--2025At this per-carat rate the asker's $5000 should have bought around 16 carats
$300Lab-grown diamond–---General current market rate cited for lab diamond stones
$300Lab-grown diamond–---Per-carat estimate for this color/clarity combination
$300Lab-grown diamond–--2025Lab-grown diamonds currently run about $300 per carat, per buyer
$300Lab-grown diamond–oval-2025Typical price for a VVS oval lab diamond from vendors like Aurelinne or Calavera
$300Lab-grown diamond–--2025A jewelry seller's wholesale price for small lab melee stones (tennis bracelets, wedding bands), not center-stone diamonds
$300Lab-grown diamond–--2026Buyer's rule of thumb: lab-grown diamonds shouldn't cost more than about $300 per carat.
$300Lab-grown diamond–--2026Consumer's claim that even 3ct D VVS1 lab stones sell for this per-carat rate or less
$300Lab-grown diamond–--2026A bigger budget can get an internally flawless lab stone around this per-carat price
$300Lab-grown diamond2 ctround-2026Is comfortable paying this per carat for a plain 2-carat round lab stone
$300Lab-grown diamond–--2026The most this buyer would pay per carat, buying from a lab-diamond specialist
$300 to $400Lab-grown diamond–---Cited going rate for fancy pink lab diamonds
$350Moissanite3 ctoval-2025Buyer's own average of oval moissanite per-carat prices across every recommended US vendor selling loose stones
$350 to $500Natural diamond–--2022Estimated Sri Lankan per-carat ceiling: about $500 if unheated, $350 if heat-treated
$350Lab-grown diamond–--2023Cheapest lab diamond sale price the writer had come across while researching
$350 to $400Lab-grown diamond–--2023Prices the writer had seen for 2-3+ carat lab stones, close to a rival buyer's implied rate
$350Diamond, lab or natural not said–---A well-known local jeweler's setting fee, described as the highest rate the writer has seen
$350Lab-grown diamond–---Buyer says lab diamond prices have dropped to about $350/carat
$350Lab-grown diamond–---Typical retail per-carat price for a VVS-F lab diamond in India
$350-1 ct--2026Quote for a 1 ct unheated purple opalescent Luc Yen sapphire at $350/ct, seen as more reasonable
$375-4.4 ctcushion-2025Natural Zambian emerald, elongated cushion cut, seller-listed price per carat, noted to have a fair number of inclusions
$400-–---A self-described 47th-street wholesaler said the stone was worth no more than $400/carat, which others called a wholesale-vs-retail mixup.
$400 to $500Lab-grown diamond–--2024Current price for VVS quality lab-grown stones from Chinese vendors
$400Lab-grown diamond–--2024General lab diamond market rate cited as about $400 per carat, suggesting the asker's stone was overpriced
$400Lab-grown diamond–-Fiorese2024Custom lab diamond under 4ctw runs $400/ct, $500/ct over 4ctw; white gold setting $490; IGI cert optional $200
$400Lab-grown diamond–--2025Buyer said lab-grown fancy yellow and fancy blue diamonds were running around $400 a carat at the time
$400 to $1,000Lab-grown diamond–---Self-described appraiser's rule of thumb for fair lab diamond per-carat pricing before retail markup
$400 to $500Lab-grown diamond–---Going rate in India for top color/clarity lab diamonds, per a buyer who owns a 2ct princess cut bought there
$400Lab-grown diamond–--2025Buyer's suggested fair per-carat price for a lab diamond of this caliber
$400 to $500Lab-created coloured stone–--2025Estimate for colored/fancy lab diamonds such as the blue stone in the asker's ring
$400Lab-grown diamond–-Starsgem2026Colored lab diamonds quoted around $400 per carat, seen as expensive by the writer
$450Lab-grown diamond–emeraldLoose Grown Diamond2024Buyer said this vendor's lab emerald-cut diamonds ran about $450 per carat, the lowest price she'd seen
$475-0.1 ct--2025Forum estimate confirming $475/ct as fair for two small included 0.1 carat natural alexandrites
$480 to $1,000Lab-grown diamond–--2024Typical 1ct lab diamond consumer pricing per a dealer, F/VS around $480 at the low end, varies by vendor and quality
$500Lab-grown diamond–--2023Same writer would rather pay about 500 for a better-looking lab stone than buy an included natural one; rough figure
$500-4 ct---A buyer says similar 4ct clean spinels typically go for about $500/carat at gem shows if you negotiate
$500Lab-grown diamond–--2024Personally wouldn't pay more than this per carat retail for lab stones, about 5x the wholesale rate
$500Lab-grown diamond–--2024Typical cost estimate for a lab diamond per carat, before setting, via US online vendors
$500Lab-grown diamond–asscher-2024A vendor rep quoted about $500 per carat for a custom lab-diamond cut, which would run about $5k for a large stone
$500-–---Local estimates ran this high per carat, so she mailed stones to China or other US vendors instead
€500Natural diamond–--2025Buyer's guess at typical price for a 1ct natural stone
$500Natural diamond–--2025Self-described secondhand jewelry buyer's rule of thumb: scrap gold value plus $500 per carat for diamonds, capping an offer on this ring around $2,300.
$500Lab-grown diamond–---The person asking says stores were seen charging around this much per carat, calling it a ripoff next to the cheap listing found.
$500Other gemstone–--2025Buyer's rough retail guess assuming a natural, standard-heat sapphire with visible color zoning
$500 to $600Diamond, lab or natural not said–--2025Another buyer's per-carat price estimate, stone type and currency not stated
$500 to $600-–---One buyer's opinion that a fairer price for this emerald would have been $500-600 per carat.
$500 to $600Lab-grown diamond–---Buyer's own benchmark for a good pink lab diamond bought from overseas vendors, versus higher local jeweler pricing
$500Lab-grown diamond–---Writer's rule of thumb ceiling for lab diamond pricing
$500-1.7 ct--2026Bought a 1.7 ct silky sapphire for $500/ct to be set into a ring
$500-1 ct---Same buyer estimates 1+ct sapphires run about $500 per carat
$500Lab-grown diamond–--2023Recutting a lab diamond at retail can cost up to about $500 per carat, seen as a likely floor under prices for good material.
$500Lab-grown diamond–-Lightbox2024Cited as a reference floor price, expected to fall further as lab supply grows
$500Lab-grown diamond–-Southwest2025Buyer confirms paying about this rate per carat, based on the stone's starting weight, for a specialty recutting service
$550Diamond, lab or natural not said–--2023Trade insider's per-carat valuation of the center stone in the pawn ring; side melee stones valued around $250/ct
$600Moissanite3 ctovallocal jeweler2025Local jeweler's estimate for a 3ct colored (gray) moissanite, said to cost far more than white moissanite
$600Moissanite–--2022Writer's own custom-cut moissanite ran higher than typical, about $600 per carat
$600Lab-grown diamond–-Lightbox2022Lightbox's Basics line runs around this per-carat price, roughly J-L color, also stackable with a 10% discount code
$600 to $1,000Lab-grown diamond–---Comparison figure given for lab diamond cost per carat, contrasted against moissanite pricing
$600Lab-grown diamond–--2023The best per-carat rate the writer found after weeks of searching, for stones later set with Provence
$600Lab-grown diamond–-DovEggs-DovEggs custom OMC pricing, though quality called less consistent with dead spots
$600Other gemstone10 ct--2025A friend's matched pair of 10-carat weak-color-change alexandrites sold together for $12,000, about $600 a carat
$600Lab-grown diamond–---Lab-grown priced around $600 per carat, per buyer
$600 to $1,500-2 ct--2026Buyer says a fair price for a 2ct Ceylon sapphire should be $600-1500 per carat, versus the roughly $10,000/carat quoted
$600-–--2026Buyer's own distributor quotes about $600/carat for 2-5ct Ceylon sapphires bought direct at a gem trade show
$600Lab-grown diamond2 ct--2026Would pay up to this per carat for an exceptional 2ct stone, like a warm fancy-color Asscher or ideal Old European round
$600Moissanite1 ct-With Clarity (cited education page)2022The person asking cited a moissanite education page putting a standard 1ct stone at around $600 at mainstream retailers
$612Lab-grown diamond2 ctroundLooseGrown2024IGI-certified old European cut lab diamond, about $306/carat, bought loose for a bracelet project
€650Lab-grown diamond3 ct--2026Same buyer says a 3ct lab diamond runs about EUR650
$660 to $730Natural diamond–---Priced by an individual overseas contact, checked as genuine at a grading lab
$686Lab-grown diamond3.25 ct--2025Per-carat price for a 9.53mm GIA D VVS2 option, cheaper per carat than the 3.03ct alternative
$699 to $1,200Other gemstone–--2025Average per-carat range given for alexandrite with a muted color change like the asker's stone
$700Lab-grown diamond2 ct---Guideline maximum fair per-carat price for a D VVS1 lab stone, from a buyer offering buying help
$700 to $800Lab-grown diamond–round-2024Jeweler says lab rounds actually run this much per carat versus client expectations of $7,000-plus for 3ct
$700 to $800Other gemstone4 ct--2025Estimates around $700-800 per carat for this emerald given the number of inclusions
$700Lab-grown diamond–--2025Suggested ceiling price shoppers should pay per carat for a lab diamond
$700Natural diamond–--2025Same seller's wholesale price for small natural melee stones, not center-stone diamonds
$700 to $1,300Moissanite–-Charles & Colvard / Brilliant Earth2021The asker's own research into per-carat pricing at reputable moissanite retailers
$700Sapphire1 ct--2026Buyer says one-carat padparadscha sapphires sell for about this much
$700Lab-grown diamond–---The same jeweler quoted about $700 a carat for E color
$715Lab-grown diamond–other-2026Maker's price for a custom novelty-shaped (cartoon character) pink lab diamond, sold as a pendant/loose stone, not a ring
$720Natural diamond1.5 ct--2026Seller's asking price for a 1.5ct natural Zambian emerald, oiled only, no other treatment
$742 to $989Lab-grown diamond–--2026Buyer called the jeweler's per-carat quote for the stone he was upselling very high for a lab-grown gem
$750Lab-grown diamond–--2023The writer's general sense of lab diamond retail pricing, higher for larger stones
$750 to $1,500Sapphire–--2024Cited price range for treated purple sapphire, depending on treatment type
$750Other gemstone4 ct--2025Counters that a fairly cut and priced version of this stone should run about $750 per carat, not $1,250
$771Lab-grown diamond2.33 ctroundAdiamor2023Larger, lower-color/clarity stone priced much lower per carat, called the clear value winner
$800Lab-grown diamond–-LightBox2021De Beers' LightBox brand sells lab-grown diamonds at roughly $800 per carat, cited as a cheap lab option
$800Lab-grown diamond2 ct-Lightbox (De Beers)-De Beers' Lightbox line offers roughly 2ct-range lab diamonds at about $800 a carat, near-colorless VS clarity
$800Lab-grown diamond–-Lightbox2022De Beers' Lightbox line sold lab-grown loose stones at 800 per carat
$800Lab-grown diamond–roundLightbox2022Lightbox's general per-carat price for lab diamonds, rounds only, no ovals offered
$800 to $900Lab-grown diamond–--2022Typical lab diamond per-carat price given as a comparison point to moissanite
$800Lab-grown diamond–roundLightbox2022Buyer's own 2ct round diamond came from Lightbox; general per-carat price for their good-quality rounds
$800Lab-grown diamond–-Lightbox2022A diamond buyers' forum buyers reportedly got nice 1.5-2 ct Lightbox lab diamonds around this per-carat price, plus a further 10% off with a discount code
$800Lab-grown diamond–-De Beers Lightbox2023De Beers/Lightbox has priced near-colorless lab diamonds around $800 per carat for years
$800-4.07 ct---Another buyer says $800/carat is a fair dealer price for a top-quality loupe-clean pink spinel this size
$800Lab-grown diamond–-Fiorese-Approx per-carat price for a custom-cut OMC/antique cushion, a couple months before the post
$800Lab-grown diamond2 ct-DeBeers Lightbox-Buyer recalls this used to be seen as a great per-carat price for a lab diamond; prices have fallen since
$800Lab-grown diamond–-Facebook Marketplace2024Buyer says Facebook Marketplace sellers were pricing lab-grown diamonds above this per carat despite poor cuts
$800Lab-grown diamond–-Lightbox Jewelry2025Lightbox Jewelry, owned by De Beers, sells loose lab diamonds around $800 a carat
$800 to $1,000Other gemstone–--2025Buyer's estimate of retail per-carat price for Colombian emerald of this quality, on top of the metal and side diamonds cost
$800-–---Lapidary artist's estimate for sourcing similarly fine-quality tanzanite for a ring or necklace, not including cutting
€800Lab-grown diamond–---Ireland-area lab diamond per-carat estimate; add roughly EUR1600 for 18ct yellow gold setting metal, plus VAT
$800 to $1,000Lab-grown diamond–--2026Same dealer says resellers who buy his wholesale-sourced lab stones typically resell in this per-carat range
$800Lab-grown diamond–---A local jeweler quoted about $800 a carat for D color
$800Lab-grown diamond–-De Beers Lightbox2021De Beers' Lightbox brand sells its lab-grown stones at this flat per-carat rate regardless of grade
$800 to $1,500Lab-grown diamond–-Lightbox2022A buyer says a budget lab-diamond line prices around $800/ct for very-good cut and $1,500/ct for its excellent-cut colorless line, with no third-party lab certification
$800Lab-grown diamond–-Lightbox2023Lightbox's flat per-carat pricing, cited as a disruptive force in lab diamond pricing
$800 to $1,000Lab-grown diamond2 ct--2024Buyer's target budget for colorless (D-F) ~2ct lab diamonds: ideally $800 per carat, up to $1,000 per carat
$836Lab-grown diamond3.2 ct--2024Per-carat price for a 9.43mm option, added in a follow-up edit
$837Lab-grown diamond3.03 ct--2024Per-carat price for a 9.27mm option under comparison
$850 to $1,200Natural diamond–roundGrunberger Diamond2025The asker's updated recollection of Grunberger's natural 8HA melee price; still hadn't found an affordable lab-grown source
$875Lab-grown diamond2 ctroundAlex2024Uncertified old European cut lab diamond bought loose from an independent seller called Alex, about 2 weeks before the LooseGrown stones
$900Lab-grown diamond–-Provence-Provence custom-cut OMC pricing, close to Fiorese's

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Sources and method

Price reports on this page come from 276 public discussions where buyers answered in their own words. Each comment that stated what someone paid became one row; notes are paraphrased, never quoted.

The largest discussions used here (60)