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Cushion|Lab Grown|IGI

1.50ct E SI1 Cushion Lab Grown Diamond

EX • E/SI1 • IGI LG522225256

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG522225256

Diamond specifications and retailer prices

From $826 NZD
As of November 5, 2026
Save $1,162 NZD (58%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $1,989 NZD at MOH London · As of November 5, 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG522225256 or 522225256. Listed at 6 retailers as of November 5, 2026, with prices from $826 to $1,989, a $1,162 spread on the same certified stone. MOH London lists it at $1,989. 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
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle37.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG522225256
Dimensions6.81 × 6.54 × 4.28 mm
L/W Ratio1.04
Girdle conditionFaceted
Culet sizePointed
Top View
6.81 mm6.54 mm1.50 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG522225256
Side View
Table 60.0%Crown 36.7°Girdle: STK-THKPavilion 37.9°Culet: NoneDepth 65.4%

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: Nov 5
Current: $1,989 NZD|Low: $805 NZD|High: $2,018 NZD|Avg: $1,214 NZD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 5, 2026
Retailer 6$826 NZD
Retailer 4$850 NZD
Retailer 2$918 NZD
Retailer 5$1,090 NZD
Retailer 3$1,605 NZD
MOH London$1,989 NZD

41 data points across 6 retailers

6 retailers$826 NZD to $1,989 NZD

A
Cheapest Retailer
-
$826 NZD
A
Retailer 2
-
$850 NZD
View
A
Retailer 3
-
$918 NZD
View
B+
Retailer 4
-
$1,090 NZD
View
B+
Retailer 5
-
$1,605 NZD
View
Most Expensive
B
MOH London
LG522225256 · Nov 5
$1,989 NZD
£868 GBP
View
5 more retailers have this diamond
Prices start from $826 NZDSave up to $1,162 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.

A
1.50ct Cushion
$826 NZD