Cushion|Lab Grown|GIA

1.51ct D SI1 Cushion Lab Grown Diamond

EX • D/SI1 • GIA 6425283095

Certificate GIA 6425283095

Diamond specifications and retailer prices

From $332 USD
As of November 7, 2026
Save $1,000 USD (75%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,332 USD at MOH London · As of November 1, 2026
View at MOH London

About this 1.51ct lab-grown cushion diamond

This 1.51ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6425283095. Listed at 10 retailers as of November 1, 2026, with prices from $332 to $1,332, a $1,000 spread on the same certified stone. MOH London lists it at $1,332. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
D
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
CertificateGIA 6425283095
Dimensions6.89 × 5.98 × 4.11 mm
L/W Ratio1.15
Top View
6.89 mm5.98 mm1.51 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6425283095
Side View
Table 62.0%CrownGirdle: ThickPavilionCulet: NoneDepth 68.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 7
Current: $1,332 USD|Low: $191 USD|High: $1,403 USD|Avg: $672 USD|-3.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 11$191 USD
Retailer 10$332 USD
Retailer 9$448 USD
Retailer 7$490 USD
Retailer 5$525 USD
Retailer 8$590 USD
Retailer 2$705 USD
Retailer 6$853 USD
Retailer 3$1,086 USD
Retailer 4$1,173 USD
MOH London$1,332 USD

27 data points across 11 retailers

10 retailers$332 USD to $1,332 USD

A
Cheapest Retailer
-
$332 USD
B+
Retailer 2
-
$448 USD
View
A
Retailer 3
-
$490 USD
View
A
Retailer 4
-
$525 USD
View
A
Retailer 5
-
$590 USD
View
B+
Retailer 6
-
$705 USD
View
B+
Retailer 7
-
$853 USD
View
Retailer 8
-
$1,086 USD
View
Price last confirmed 117 days ago
B
Retailer 9
-
$1,173 USD
View
Most Expensive
B
MOH London
LG6425283095 · Nov 1
$1,332 USD
£1,049 GBP
View
9 more retailers have this diamond
Prices start from $332 USDSave up to $1,000 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.51ct Cushion
$332 USD