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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 $1,136 NZD
HK$5,000 HKD
As of November 1, 2026
Save $2,623 NZD (70%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $3,759 NZD at MOH London · As of November 1, 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 November 1, 2026, with prices from $1,136 to $3,759, a $2,623 spread on the same certified stone. MOH London lists it at $3,759. 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $3,759 NZD|Low: $1,024 NZD|High: $3,804 NZD|Avg: $1,830 NZD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 7$1,024 NZD
Retailer 6$1,180 NZD
Retailer 8$1,384 NZD
Retailer 9$1,441 NZD
Retailer 2$1,547 NZD
Retailer 3$1,574 NZD
Retailer 5$2,014 NZD
Retailer 4$2,360 NZD
MOH London$3,759 NZD

42 data points across 9 retailers

11 retailers$1,136 NZD to $3,759 NZD

Retailer 1
-
$1,024 NZD
$577 USD
Price last confirmed 16 days ago
B+
Retailer 2
-
$1,136 NZD
HK$5,000 HKD
View
B+
Retailer 3
-
$1,176 NZD
$663 USD
View
B+
Retailer 4
-
$1,180 NZD
$665 USD
View
B+
Retailer 5
-
$1,384 NZD
$780 USD
View
B+
Retailer 6
-
$1,441 NZD
$812 USD
View
B+
Retailer 7
-
$1,547 NZD
£686 GBP
View
B+
Retailer 8
-
$1,574 NZD
€845 EUR
View
B
Retailer 9
-
$2,014 NZD
$1,135 USD
View
B
Retailer 10
-
$2,360 NZD
$1,330 USD
View
Most Expensive
B
MOH London
6412739498 · Nov 1
$3,759 NZD
£1,668 GBP
View
10 more retailers have this diamond
Prices start from $1,136 NZDSave up to $2,623 NZD

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
$1,136 NZD