A standard
of AIDI

Price list · issue 2026-10-02

Lab-Grown Diamond Price List.

US$ per carat, asking, loose stones. Built from 89,062 listings on 2026-10-02. Plain figures are the median of at least five listings; italic figures are modelled from the sheet; a dash means no price. Value a stone in these grades

Round

0.30–0.39 ct

LCVVS1VVS2VS1VS2SI1SI2P
D2,130820690660640490——
E1,190760660640580480——
F1,470990710650580480——
G1,140770550500450370——
H1,000680480440390330——
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0.40–0.49 ct

LCVVS1VVS2VS1VS2SI1SI2P
D2,440780640620510430——
E1,280760620570500420——
F1,290870620570510420——
G1,000670480440390330——
H880590420390340290——
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0.50–0.69 ct

LCVVS1VVS2VS1VS2SI1SI2P
D1,140760600610600390——
E1,160740580570460380——
F1,170790560510460380——
G900610430400350290——
H790540380350310260——
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0.70–0.89 ct

LCVVS1VVS2VS1VS2SI1SI2P
D1,050700620570480400——
E1,200740620560470390——
F1,200810580530470390——
G930630450410370300——
H820550390360320270——
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0.90–0.99 ct

LCVVS1VVS2VS1VS2SI1SI2P
D1,320750620570530420——
E1,270860610560500420——
F1,280860620560500420——
G990670480430390320——
H870590420380340280——
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1.00–1.49 ct

LCVVS1VVS2VS1VS2SI1SI2P
D1,950840640640610490——
E3,200950690660610470——
F2,9101,090850660610560——
G1,110750530490430360——
H970660470430380320——
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1.50–1.99 ct

LCVVS1VVS2VS1VS2SI1SI2P
D2,0701,050890800780650——
E2,3001,0201,010910770590——
F1,9601,2101,190780770590——
G1,5201,0201,060650600500——
H1,330900640590520440——
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2.00–2.99 ct

LCVVS1VVS2VS1VS2SI1SI2P
D2,5301,6401,2301,0101,000840——
E2,8001,3701,2101,090900720——
F2,5201,7701,3501,1101,030820——
G1,9501,470950860760640——
H1,7101,160830750670560——
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3.00–3.99 ct

LCVVS1VVS2VS1VS2SI1SI2P
D3,1002,1501,7201,4701,2801,010——
E2,3901,5401,4501,3501,150990——
F3,0601,6601,3201,1601,0301,000——
G2,3601,5901,0901,000770770——
H2,0801,400950910820680——
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4.00–5.00 ct

LCVVS1VVS2VS1VS2SI1SI2P
D3,1902,2101,7901,5701,3401,050——
E2,7301,8301,5201,3301,1901,030——
F2,1901,5001,3601,2101,110660——
G2,4501,6501,1801,070930800——
H2,1501,4501,040950850700——
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Fancy shapes

0.30–0.39 ct

LCVVS1VVS2VS1VS2SI1SI2P
D2,3001,2909108807701,070——
E1,7901,110880890920860——
F1,6701,0908601,000850610——
G1,530990780670630560——
H1,230800630540510450——
I1,130730580500460410——
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0.40–0.49 ct

LCVVS1VVS2VS1VS2SI1SI2P
D2,9601,150850820750930——
E1,7001,060820810800620——
F1,5901,030810730800580——
G1,460950740640600530——
H1,170760600520480430——
I1,070700550470440390——
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0.50–0.69 ct

LCVVS1VVS2VS1VS2SI1SI2P
D2,0701,0307907607201,120——
E1,920960750710740780——
F2,4202,180800670620550——
G1,390900710610570500——
H1,120720570490460410——
I1,020660520450420370——
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0.70–0.89 ct

LCVVS1VVS2VS1VS2SI1SI2P
D1,910880740660610610——
E1,660840710630600590——
F1,270850670610600590——
G1,160750660670560420——
H940610480660380340——
I860560440380350310——
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0.90–0.99 ct

LCVVS1VVS2VS1VS2SI1SI2P
D1,340910690630580510——
E1,320870670600550470——
F1,210820660590500440——
G1,110720640570460400——
H890580460390370330——
I820530420360340300——
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1.00–1.49 ct

LCVVS1VVS2VS1VS2SI1SI2P
D1,640980680610590550——
E1,460910650600640510——
F1,600920760560520490——
G2,160720600540510420——
H940610570540390340——
I860560440380350310——
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1.50–1.99 ct

LCVVS1VVS2VS1VS2SI1SI2P
D1,8901,3601,100850770730——
E1,7401,130960810710650——
F3,1801,070890760680610——
G2,160900760680620580——
H1,270830650560520460——
I1,170760600510480420——
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2.00–2.99 ct

LCVVS1VVS2VS1VS2SI1SI2P
D2,2501,4401,4301,1801,120920——
E3,0501,3401,3101,140980750——
F2,2601,2901,1901,050880730——
G4,6201,140960850750770——
H1,7101,020820760700620——
I1,5601,010800690640570——
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3.00–3.99 ct

LCVVS1VVS2VS1VS2SI1SI2P
D3,3202,1501,8601,5801,370940——
E4,3801,5401,3601,2501,230800——
F3,2201,4801,2601,1201,130770——
G2,5201,2301,010940880920——
H2,0301,320850890830740——
I1,8601,210950820760680——
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4.00–5.00 ct

LCVVS1VVS2VS1VS2SI1SI2P
D2,7402,0101,6601,4301,200920——
E2,3701,7301,2601,1401,130770——
F2,4001,5101,1601,1301,030890——
G2,2401,450990980830790——
H1,8001,170810720760660——
I1,6501,070840730680600——
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Fancy shapes, against the sheet

Oval× 1.0215,919
Cushion× 0.99937
Radiant× 0.999,208
Pear× 1.0211,581
Heart× 1.002,313
Marquise× 0.946,096
Square× 0.999,786
Emerald× 1.0010,030

Adjustments

Cut: Very Good× 0.96measured in 321 listings
Cut: Good× 0.82Lepdo wholesale guide, Excellent 15–30% above Good
Cut: Fair, Poorno figureno price found

Grown by HPHT or CVD

The list is blind to growth method. HPHT is priced at list × √r and CVD at list ÷ √r, with r the HPHT-over-CVD ratio in Lepdo's published wholesale guide at the nearest weight.

WeightHPHT ÷ CVDHPHTCVD
0.50 ct1.240× 1.114× 0.898
1.00 ct1.211× 1.100× 0.909
1.50 ct1.145× 1.070× 0.935
2.00 ct1.188× 1.090× 0.917
3.00 ct1.151× 1.073× 0.932

Optical performance (brightness, fire, scintillation) is described on a certificate under GDCS/T—2027 and carries no price: in the listings the top light-performance label does not sell above Excellent.

Fancy colour, 0.90–1.20 ct

Fancy LightFancyFancy IntenseFancy DeepFancy Vivid
Yellow——1,250—1,250
Pink——360—330
Blue——3701,250310
Red—1,000———
Green—430420—350
Brown—520———

Observed at one retailer on 2026-10-02, 340 listings. A hue and intensity with fewer than five listings is not printed. In lab-grown stones intensity does not order price the way it does in natural ones; the list prints what was observed.

Sources

Listings: The Diamond Price, published agent API. Wholesale method and cut gaps: Lepdo, published guides. Fancy colour: Blue Nile, public listings. Every file is archived with its date and hash. How it is calculated. JSON