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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 $667 AUD
As of November 5, 2026
Save $938 AUD (58%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $1,604 AUD 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 $667 to $1,604, a $938 spread on the same certified stone. MOH London lists it at $1,604. 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $1,604 AUD|Low: $649 AUD|High: $1,628 AUD|Avg: $980 AUD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 5, 2026
Retailer 6$667 AUD
Retailer 4$685 AUD
Retailer 2$741 AUD
Retailer 5$879 AUD
Retailer 3$1,295 AUD
MOH London$1,604 AUD

41 data points across 6 retailers

6 retailers$667 AUD to $1,604 AUD

A
Cheapest Retailer
-
$667 AUD
A
Retailer 2
-
$685 AUD
View
A
Retailer 3
-
$741 AUD
View
B+
Retailer 4
-
$879 AUD
View
B+
Retailer 5
-
$1,295 AUD
View
Most Expensive
B
MOH London
LG522225256 · Nov 5
$1,604 AUD
£868 GBP
View
5 more retailers have this diamond
Prices start from $667 AUDSave up to $938 AUD

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
$667 AUD