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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 $409 CAD
$293 USD
As of October 25, 2026
Save $1,409 CAD (77%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $1,818 CAD at MOH London · As of October 29, 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 October 25, 2026, with prices from $409 to $1,818, a $1,409 spread on the same certified stone. MOH London lists it at $1,818. 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
Color
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 →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 25
Current: $1,818 CAD|Low: $323 CAD|High: $1,818 CAD|Avg: $1,010 CAD|+9.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 31, 2026
Retailer 4$409 CAD
Retailer 5$691 CAD
Retailer 2$863 CAD
Retailer 3$865 CAD
Retailer 6$1,131 CAD
Retailer 7$1,435 CAD
MOH London$1,818 CAD

36 data points across 7 retailers

7 retailers$409 CAD to $1,818 CAD

A
Cheapest Retailer
-
$409 CAD
$293 USD
B+
Retailer 2
-
$691 CAD
$495 USD
View
B+
Retailer 3
-
$863 CAD
£486 GBP
View
B+
Retailer 4
-
$865 CAD
$619 USD
View
B+
Retailer 5
-
$1,131 CAD
$810 USD
View
B
Retailer 6
-
$1,435 CAD
$1,027 USD
View
Most Expensive
B
MOH London
LG520200135 · Oct 29
$1,818 CAD
£1,025 GBP
View
6 more retailers have this diamond
Prices start from $409 CADSave up to $1,409 CAD

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
$409 CAD