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Cushion|Lab Grown|IGI

1.59ct G SI2 Cushion Lab Grown Diamond

ID • G/SI2 • IGI LG528233939

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

Certificate IGI LG528233939

Diamond specifications and retailer prices

From $515 USD
As of November 1, 2026
Save $848 USD (62%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $1,363 USD at MOH London · As of October 29, 2026
View at MOH London

About this 1.59ct lab-grown cushion diamond

This 1.59ct 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 LG528233939 or 528233939. Listed at 5 retailers as of October 29, 2026, with prices from $515 to $1,363, a $848 spread on the same certified stone. MOH London lists it at $1,363. 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

1.59
Carat
G
Color
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG528233939
Dimensions6.62 × 6.54 × 4.54 mm
L/W Ratio1.01
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
6.62 mm6.54 mm1.59 ctG / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG528233939
Side View
Table 62.0%Crown 34.5°Girdle: STK-VTKPavilion 39.9°Culet: NoneDepth 69.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $1,363 USD|Low: $397 USD|High: $1,363 USD|Avg: $821 USD|+27.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 1, 2026
Retailer 3$515 USD
Retailer 2$590 USD
Retailer 4$836 USD
Retailer 5$1,081 USD
MOH London$1,363 USD

34 data points across 5 retailers

5 retailers$515 USD to $1,363 USD

A
Cheapest Retailer
-
$515 USD
B+
Retailer 2
-
$590 USD
£465 GBP
View
B+
Retailer 3
-
$836 USD
View
B
Retailer 4
-
$1,081 USD
View
Most Expensive
B
MOH London
LG528233939 · Oct 29
$1,363 USD
£1,073 GBP
View
4 more retailers have this diamond
Prices start from $515 USDSave up to $848 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
1.59ct Cushion
$515 USD