CaratHunter
Plans
Cushion|Lab Grown|IGI

1.51ct G SI2 Cushion Lab Grown Diamond

ID • G/SI2 • IGI LG520200135

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG520200135

Diamond specifications and retailer prices

From $633 SGD
$495 USD
As of November 1, 2026
Save $1,022 SGD (62%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $1,654 SGD 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG520200135 or 520200135. Listed at 7 retailers as of November 1, 2026, with prices from $633 to $1,654, a $1,022 spread on the same certified stone. MOH London lists it at $1,654. 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
G
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.2°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG520200135
Dimensions6.58 × 6.48 × 4.52 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.58 mm6.48 mm1.51 ctG / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG520200135
Side View
Table 62.0%Crown 40.2°Girdle: STK-VTKPavilion 40°Culet: NoneDepth 69.8%

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: $1,654 SGD|Low: $295 SGD|High: $1,664 SGD|Avg: $927 SGD|+8.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 4$375 SGD
Retailer 5$633 SGD
Retailer 2$790 SGD
Retailer 3$791 SGD
Retailer 6$1,035 SGD
Retailer 7$1,313 SGD
MOH London$1,654 SGD

36 data points across 7 retailers

7 retailers$633 SGD to $1,654 SGD

Retailer 1
-
$375 SGD
$293 USD
Price last confirmed 8 days ago
B+
Retailer 2
-
$633 SGD
$495 USD
View
B+
Retailer 3
-
$790 SGD
£486 GBP
View
B+
Retailer 4
-
$791 SGD
$619 USD
View
B+
Retailer 5
-
$1,035 SGD
$810 USD
View
B
Retailer 6
-
$1,313 SGD
$1,027 USD
View
Most Expensive
B
MOH London
LG520200135 · Nov 1
$1,654 SGD
£1,019 GBP
View
6 more retailers have this diamond
Prices start from $633 SGDSave up to $1,022 SGD

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+
1.51ct Cushion
$633 SGD