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The market · page 2 of 2 · updated September 2026

Price per carat from $900 to $1,000,000

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 149 quoted from $900 to $1,000,000.

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PriceStoneCaratShapeWhereYearWhat was quoted
$900 to $1,000Lab-grown diamond1 ct---Roughly what 1ct D VVS2 lab diamonds cost when she built her ring
$900 to $1,100Natural diamond–roundGrunberger Diamond20248HA natural round melee, called extremely fair pricing, but no lab-grown stock
$914-–---Computed per-carat price of the 1500 listing above, called it overpriced
$930Lab-grown diamond3 ctroundLooseGrown2024IGI-certified old European cut lab diamond, about $310/carat, bought loose for a bracelet project
$1,000 to $2,000Natural diamond1 ct-branded ideal-cut lines (A Cut Above, BG Black)2020Buyer claiming trade experience says these branded ideal-cut lines cost about $1,000-$2,000 more per carat than standard retail on a 1 ct stone
$1,000Natural diamond–--2022Sri Lankan dealer per-carat benchmark cited for a stone like this, since supply has tightened
$1,000Lab-grown diamond–---Cited roughly $1k per carat for a 5-7ct lab stone as proof large lab diamonds now price like costume jewelry
$1,000 to $1,500Moissanite1 ct--2023Buyer's sense of typical price range for a legitimate 1ct moissanite at credible jewelry stores
£1,000Natural diamond–---Diamonds reportedly change hands at about this much per carat on resale, per a writer who sold her own ring
$1,000 to $2,000Natural diamond–--2023Writer says natural SI diamonds can be found for about 1-2k a carat by shoppers who know where to look
$1,000Lab-grown diamond–---US-based custom cutters run close to $1,000/carat
$1,000-25.3 ct--2024Initial ballpark guess for this treated Colombian emerald
$1,000Lab-grown diamond–-Luvansh-Non-asscher shapes at similar carat running about $1,000/ct or below at the same vendor.
£1,000-–--2024Gives roughly £1,000 per carat as a rough minimum for a nice quality ruby, since ruby pricing isn't standardized like diamonds
$1,000Lab-grown diamond1 ct--2024General estimate that a 1-carat flawless lab diamond should cost around $1,000, far less than a comparable natural stone.
$1,000Other gemstone4 ct--2025Suggests about $1,000 per carat would be a good purchase price for this stone
$1,000Natural diamond–---Opinion that good-quality sapphires can be shopped around at roughly this per-carat average
$1,000Lab-grown diamond–-writer's own store-Jeweler's straightforward per-carat pricing structure at their own store
$1,000Lab-grown diamond–---General per-carat estimate this buyer is seeing while shopping
$1,000Natural diamond–--2025Cited benchmark of about $1,000/carat for higher-quality melee diamonds; commercial J-K/I1 melee is worth well under that.
$1,000Lab-grown diamond–---Claimed rate for a GIA/IGI center stone, disputed by other buyers as far too high
$1,000Diamond, lab or natural not said–--2025Buyer's guess at the per-carat cost of the small stones used in the asker's 1.68 ctw cluster ring
$1,000Lab-grown diamond–---Claimed typical consumer per-carat retail price for lab diamonds in the markup debate
$1,000Lab-grown diamond–---Writer's estimate that lab diamonds run under $1,000 per carat
$1,000 to $4,000Lab-grown diamond–---Cited per-carat cost for a lab-grown stone plus setting, for resale-math comparison
$1,000Lab-grown diamond–--2026Bought a lab stone 6 months earlier, near-perfect cut/color/symmetry, for under $1k a carat
$1,000Sapphire–--2026Buyer says padparadscha sapphires typically run about this much per carat or more for quality
$1,000Lab-grown diamond–--2026Says a really well cut, well colored lab diamond runs at least this much per carat, disputing much cheaper claims elsewhere here
$1,000Lab-grown diamond–---Buyers say quality certified D/IF stones sell for well under $1,000 per carat
$1,000-1.5 ct--2026Quote for a 1.5 ct unheated lavender-pink opalescent Luc Yen sapphire at $1,000/ct, about $1,500 total; called too high by several buyers
$1,000Natural diamond–---Old mine cut diamonds reportedly trading at or above this per-carat rate currently due to demand for the style
$1,000Lab-grown diamond1 ct-wztygems-Buyer says this vendor sells roughly a thousand-dollar 1ct lab-grown diamond
$1,000Lab-grown diamond2 ctroundIvy & Rose2025Roughly the per-carat rate for a 2ct antique-cut lab diamond there, called too high for the shopper's $1,000 total stone budget
$1,000Lab-grown diamond5 ct--2025Cited as an example of how cheap large lab diamonds have become compared to antique natural stones
$1,061Lab-grown diamond1.81 ctroundAdiamor2023Per-carat price used to help the person asking compare candidate replacement stones
$1,093Lab-grown diamond1 ct--2024Industry analyst Edahn Golan put the average retail price of a 1-carat lab diamond at $1093 in April 2024, about 27% above Lightbox's standard G-J VS price then
$1,100-2.2 ct--2026Seller's own listing for a no-heat African ruby, sold via PayPal/Etsy/bank transfer with free UPS shipping and a seven-day return policy
$1,100Natural diamond–--2026Jeweler-buyer cites roughly $1,100/ct as typical retail for natural melee, much less for lab-grown
$1,108Lab-grown diamond2.91 ct--2024Per-carat price for a 9.14mm option under comparison
$1,140Lab-grown diamond–-Brilliance-0.25ct lab diamond stud priced at $285, i.e. about $1,140 per carat
$1,200-–--2023A gem dealer said fine, dominantly green sapphires in the 1.5-3ct range can easily run over $1,200 per carat
$1,200 to $1,500Sapphire–--2024Said stones like this currently run about $1,200-1,500 per carat
$1,250-3 ct--2024Dealer priced a 3-carat Zambian emerald rough (uncut) at $1250 per carat
$1,250Other gemstone4 ct--2025A dealer-perspective buyer calls $1,250 per carat a good price for this stone
$1,389Natural diamond–-Costco-0.36ct natural diamond stud priced at $500, i.e. about $1,389 per carat
$1,500Lab-grown diamond–-De Beers Lightbox2023Colorless VVS lab diamonds from De Beers/Lightbox run about $1,500 per carat versus $5k+ elsewhere for a similar 1 ct stone
$1,500Lab-grown diamond5 ctasscherLuvansh-5ct+ asscher-cut lab stones still pricing above $1,500/ct, higher than other shapes at similar carat.
$1,500Lab-grown diamond–-Jannpaul-Says Jannpaul's patented White Series Emerald 2.0 stones alone run about $1,500 per carat
$1,500Natural diamond1.25 ct--2026Buyer's own sense of a fair per-carat ceiling for a medium-color 1.25ct sapphire
$1,500Lab-grown diamond–--2026Seller says these custom-cut Private Reserve stones retail around $1,500/ct for F/G VVS1-2, versus a generic ~$250 round brilliant
$1,600Natural diamond1.8 ct--2026Same 12-stone melee quote at a lower GH color grade instead of E-F
$1,800Natural diamond1.8 ct--2026Quote for 12 accent diamonds, ~3.4mm each, ~1.8ctw total, VVS clarity E-F color, for a custom sapphire ring
$1,800-25.3 ct--2024Buyer's estimate for an emerald with this level of oil enhancement
$1,800Natural diamond–---Buyer says $1,800 per carat is high for this stone's quality; expects better color or clarity at that level
$2,000 to $5,000-–--2022Natural melo melo pearls typically sell for $2,000-$5,000 per carat at auction; roughly one sells at a national auction house per year
$2,000Natural diamond–--2023Same writer: the I to SI natural stones most people buy cost about the same 2k per carat
$2,000Lab-grown diamond–--2023Writer says lab stones of IF to VVS2 clarity still run about 2k per carat
$2,000-–--2024Buyer says better cut and quality padparadscha sapphires run about $2k per carat
$2,000 to $4,000Other gemstone–--2025Buyer's ceiling estimate for alexandrite per-carat prices in general
$2,000Lab-grown diamond–---Services that grow a memorial diamond from a lock of hair charged roughly $2k per carat, at least at one point, from memory
$2,000Diamond, lab or natural not said–round-2025Buyer's claim that a good hearts-and-arrows stone runs about $2,000 per carat
$2,000-–---Good-quality padparadscha sapphires run $2,000+ per carat retail; called one of the rarest, most sought-after sapphires
$2,000Natural diamond1 ct--2026Buyer's average price estimate for a 1ct natural diamond, contrasted with lab pricing
$2,000-2 ct---Buyer estimates 2+ct sapphires run $2,000+ per carat
$2,000 to $15,000-–---A large certified natural padparadscha sapphire can run $2,000 to $15,000 per carat; certified lab pads also pricey but less
$2,200-8 ct--2025GemGuide lower-fine reference price for a natural blue sapphire around this size
$2,211Lab-grown diamond5.08 ctroundAdiamor2023CVD lab diamond with higher clarity than the Whiteflash stone but far cheaper per carat
$2,250Lab-grown diamond2 ctemeraldJann Paul2025Grower's most expensive emerald-cut lab stone at that size, per a buyer who checked pricing
$2,300Lab-grown diamond–otherJann Paul20242.2mm lab decagon melee, about 120 SGD (~2300 USD) per carat; the person asking called the pricing monstrously high
$2,500-3.05 ct---The person asking asking whether $2,500/ct is a fair price for a 3.05ct no-heat padparadscha sapphire up for auction
$2,500Natural diamond–---Buyer frames the deal as about $2,500 per carat, saying clarity should be better at that price for a slightly bluish-green stone
$2,500Natural diamond–--2024Buyer's benchmark price for a nice GIA-certified natural diamond at the time
$2,500-5.2 ct--2024Zambian emerald, 5.2 carats, priced at $2,500 per carat, about $13,000 total; not identified as an engagement piece
$2,500 to $20,000Natural diamond–---Natural diamonds range roughly $2,500-$20,000 per carat depending on quality, per buyer
$2,538Lab-grown diamond–roundJann Paul20258HA round lab melee quote, about 87.50 USD each, 3-month wait time
$2,600Diamond, lab or natural not said–---Estimate of the asker's per-carat cost implied by the $23k asking price for the 8.72ct stone
$2,652-–--2024Cited standard retail rate for 1-2ct oil-treated Colombian oval emeralds, for comparison
$3,000 to $7,000-–--2024Same buyer's estimate for a comparable emerald if untreated or minor treatment instead of moderately oiled
$3,000 to $3,500Natural diamond1 ct--2025Typical price cited for a 1ct natural I VS2 diamond, used to gauge whether the asker's stone was priced fairly
$3,000Natural diamond–--2025Buyer's translation of the Surat wholesale quote into roughly $3,000 per carat, about $4,500 for the asker's size stone
A$3,000Sapphire–--2025Buyer's estimate of the going per-carat rate for this quality of sapphire, in Australian dollars
$3,000 to $5,000-–--2026Buyer has heard this as a rule-of-thumb per-carat diamond price range
$3,000Lab-grown diamond–otherJannPaul2023Quoted per-carat price for the new Octagon Nova cut before tax; about 4-5 month wait
$3,200Sapphire–---Typical per-carat price for a fine ideal-color sub-2ct unheated blue sapphire, per a gem dealer
$3,500Natural diamond–---Top-quality vibrant blue sapphires can run well above this per-carat rate
$4,000-–--2024Buyer says smaller 5-10ct Colombian emeralds with minor or no oil treatment easily exceed this per carat
$4,000-25.3 ct--2024Another buyer's minimum per-carat estimate for a 25ct stone of this kind
C$4,780Natural diamond1.01 ct---Buyer's estimated fair per-carat rate for this diamond, implying about $4,828 total
$4,823-3.11 ct---Per-carat math on the $15k price for the heated 3.11ct sapphire, called overpriced for a heat-treated stone.
$4,826Lab-grown diamond5.02 ctroundWhiteflash2023Whiteflash's branded-cut lab diamond, used as the high-price comparison point here
$5,000 to $6,000Natural diamond1 ct---Typical price cited for a 1ct GIA natural diamond alone; add about $2k more for the ring setting
$5,000Sapphire–---High-end per-carat price offered for 3ct+ vivid blue unheated sapphires with top clarity and cut
$5,000 to $50,000-–--2023High-grade unheated natural coloured gemstones can cost 5-50k a carat or more
$5,000Diamond, lab or natural not said1 ct---Estimate that a 1-carat diamond runs about $5k, pushing back on a much higher figure mentioned upthread
$5,000Natural diamond–--2024Estimates good-quality natural diamonds run around this per carat
$5,000Sapphire–--2024Cited price for quality unheated purple sapphire
$5,000-–--2024Buyer says paying $5k per carat for this stone (the ~$10k listing) is way too much
5,000 to 7,000Lab-grown diamond1 ct---PHP; buyer says a loose 1ct lab diamond typically sells for 5,000-7,000 pesos.
$7,000 to $10,000Natural diamond–---Cited per-carat cost for a natural stone plus setting, for resale-math comparison
$8,000 to $12,000Natural diamond–--2025Natural old-mine-cut diamonds run about $8,000-$12,000 per carat
$8,000Natural diamond–--2022Warmer Q to R color antique diamonds over 3 carats trading near this per-carat price
$8,392Lab-grown diamond4.51 ctroundDistinctive Gem (Jon @ Rhino)2023Priciest of the three comparable lab diamonds the person asking compiled, from a boutique seller
A$10,000Diamond, lab or natural not said–---Told a quality triple-excellent-cut E/SI1 diamond runs about 10,000 per carat
$10,000Natural diamond–---Claim that natural pink diamonds cost at least $10k per carat due to their rarity
$10,000 to $40,000-–--2024Same buyer's range for untreated Colombian emeralds of similar smaller sizes
$10,000-10 ct--2024Separate estimate: about $10,000 per carat for this stone if all conditions are perfect
$10,000-–--2025The best black opals were said to top out around this much per carat
$10,000Other gemstone–--2025Top-tier Russian or Brazilian color-change alexandrite reportedly commands tens of thousands of dollars per carat
$10,000Natural diamond–---Claims standard natural diamond pricing runs about $10,000 per carat
$10,000Natural diamond–---A natural padparadscha of comparable quality was estimated at roughly $10k per carat, give or take
₹10,000 to ₹22,000Lab-grown diamond–--2025The person asking, a goldsmith, gave a per-carat range later clarified as stated in rupees, not dollars
$10,000 to $25,000-–oval-2026Budget estimate for an unheated 4ct+ GIA-certified padparadscha sapphire, cheaper the closer to the source in the supply chain
$10,000 to $30,000Other gemstone–--2026Buyer says a true orange-based padparadscha runs about 10,000 per carat, up to 30,000 per carat for a fine 2.55ct stone
$10,000Other gemstone–--2026Estimate for a genuine copper-bearing paraiba tourmaline, if authentic
$10,000Natural diamond–--2026Target budget per carat for a 4-6ct J-L VS2 from one jeweler; his sourced list came back in six figures instead
$10,100Natural diamond1 ctround-2023Cites the Rapaport list price for a 1ct G VS1 natural diamond as proof $7.3k is a good price
A$11,000Sapphire–---Per-carat price quoted to buyer by Australian sapphire dealers for no-heat blue sapphire
$12,000 to $15,000-–---Estimate for a top-quality unheated, natural, pigeon-blood-red Burmese-type ruby, minimum per carat
$12,000Natural diamond–--2022Equivalent larger-carat N color antique diamonds trading above this per-carat price
₹15,000Lab-grown diamond–--2026Buyer's own per-carat price from a Mumbai jeweler sourcing directly from Surat manufacturers
$15,000-12 ct--2026Dealer's own per-carat offer for the smaller of the two Colombian emeralds in this negotiation
₹20,000Lab-grown diamond1 ct---Self-described jeweler's per-carat jeweler-markup price for a VVS2 lab stone
20,000 to 30,000Lab-grown diamond–-Greenhills stalls-Philippine peso per-carat range for loose lab-grown diamonds at Greenhills pearl-section stalls, which also do custom settings
₹20,000Lab-grown diamond–--2026Got certified lab-grown earrings made at this per-carat rate through a relative's jewellery business in Gurgaon
$21,000-16 ct--2026Dealer's own per-carat offer for the larger of the two Colombian emeralds in this negotiation
$30,000Sapphire–--2026Average 2-3 carat padparadscha sapphires reportedly run about $30,000 per carat
₹30,000 to ₹35,000Lab-grown diamond2 ctmarquise--Buyer's benchmark for fair market pricing on this spec; anything above called an unjustified markup
$32,000 to $35,000Natural diamond5 ct---Rapaport-based per-carat estimate for a 5ct VVS2 G-H stone
₹35,000 to ₹40,000Lab-grown diamond–--2026The asker's figure for typical per-carat retail pricing charged by branded Indian lab-diamond jewelers for the same grade stones
₹45,000Lab-grown diamond–--2024Quoted this per-carat rate for a VS1, F colour lab-grown diamond
₹45,000 to ₹50,000Lab-grown diamond–--2026Some online sites price lab-grown diamond jewellery in this per-carat range
$50,000 to $70,000-–--2024Natural alexandrite over 1 carat can run $50,000-70,000 per carat
₹50,000 to ₹60,000Lab-grown diamond1 ct---Buyer's estimate for a plain one-carat lab-grown diamond in India
$60,000Diamond, lab or natural not said1 ct--2025A rough estimate that a 1-carat diamond ring at this price tier runs around $60,000
$60,000 to $100,000Sapphire–--2026Padparadscha sapphires over 3 carats reportedly run $60,000 to $100,000 per carat
$100,000-10 ct--2024At 10 carats natural alexandrite was estimated around $100,000 per carat
$100,000Other gemstone–--2026Owner says genuine Brazilian-origin paraiba tourmaline runs six figures per carat, versus this stone likely from Mozambique, Afghanistan or Ethiopia
$200,000Natural diamond–--2025Estimate for a natural fancy blue VS1 diamond price per carat
$1,000,000Natural diamond–--2021Widely cited price for natural red diamonds, the rarest fancy-color diamond, with fewer than 50 known in circulation worldwide
$1,000,000Natural diamond–---Buyer says natural red diamonds run about $1M per carat, far above a lab-grown stone of similar color
$1,000Lab-grown diamond–---Buyer says overseas Chinese custom-cut vendors offer under $1,000/carat, calling it the best value
$15,000-1 ct--2024Top-quality natural alexandrite up to 1 carat can reach up to $15,000 per carat
-Diamond, lab or natural not said–--2025Melt-price formula given for gold jewelry: spot price per gram times purity, with 15-30% over melt called a decent deal on new pieces
$500Natural diamond–--2025Buyer's estimate for the cost of high-quality micro-pave diamonds
$50Moissanite–--2025Moissanite market price per carat, Chinese sellers often cheaper still
$350Lab-grown diamond–---Reply says current lab diamond prices are now well under $350/carat
$500-–-Gemology_obsession2025Referred to a specific seller for good sapphire material under $500 per carat
$100Lab-grown diamond–--2026Claims lab diamond market price has fallen to under $100 per carat
$100Lab-grown diamond–---A nice lab emerald shouldn't run more than about $100/ct unless cut by a specialty lapidary

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Sources and method

Price reports on this page come from 109 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)