Cushion|Lab Grown|GIA

1.50ct D SI1 Cushion Lab Grown Diamond

EX • D/SI1 • GIA 6412739498

Certificate GIA 6412739498

Diamond specifications and retailer prices

From $640 USD
HK$5,000 HKD
As of October 30, 2026
Save $1,490 USD (70%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,130 USD at MOH London · As of October 29, 2026
View at MOH London

About this 1.5ct lab-grown cushion diamond

This 1.5ct 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 6412739498. Listed at 11 retailers as of October 29, 2026, with prices from $640 to $2,130, a $1,490 spread on the same certified stone. MOH London lists it at $2,130. 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

1.50
Carat
D
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabGIA
CertificateGIA 6412739498
Dimensions6.98 × 6.48 × 4.38 mm
L/W Ratio1.08
Top View
6.98 mm6.48 mm1.50 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6412739498
Side View
Table 64.0%CrownGirdle: ThickPavilionCulet: NoneDepth 67.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $2,130 USD|Low: $577 USD|High: $2,144 USD|Avg: $1,027 USD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 31, 2026
Retailer 7$577 USD
Retailer 6$665 USD
Retailer 8$780 USD
Retailer 9$812 USD
Retailer 3$872 USD
Retailer 4$894 USD
Retailer 5$1,135 USD
Retailer 2$1,330 USD
MOH London$2,130 USD

43 data points across 9 retailers

11 retailers$640 USD to $2,130 USD

Retailer 1
-
$577 USD
Price last confirmed 14 days ago
B+
Retailer 2
-
$640 USD
HK$5,000 HKD
View
B+
Retailer 3
-
$663 USD
View
B+
Retailer 4
-
$665 USD
View
B+
Retailer 5
-
$780 USD
View
B+
Retailer 6
-
$812 USD
View
B+
Retailer 7
-
$872 USD
£686 GBP
View
B+
Retailer 8
-
$894 USD
€851 EUR
View
Retailer 9
-
$1,135 USD
View
Price last confirmed 9 days ago
B
Retailer 10
-
$1,330 USD
View
Most Expensive
B
MOH London
6412739498 · Oct 29
$2,130 USD
£1,677 GBP
View
10 more retailers have this diamond
Prices start from $640 USDSave up to $1,490 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.

B+
1.50ct Cushion
$640 USD