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Cushion|Lab Grown|IGI

1.50ct G SI1 Cushion Lab Grown Diamond

ID • G/SI1 • IGI LG750586531

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

Certificate IGI LG750586531

Diamond specifications and retailer prices

From $700 NZD
As of November 6, 2026
Save $1,373 NZD (66%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $2,073 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG750586531 or 750586531. Listed at 5 retailers as of November 5, 2026, with prices from $700 to $2,073, a $1,373 spread on the same certified stone. MOH London lists it at $2,073. 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
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.6°
Pavilion angle34°
OriginLab Grown
Grading LabIGI
CertificateIGI LG750586531
Dimensions6.47 × 6.44 × 4.27 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.47 mm6.44 mm1.50 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG750586531
Side View
Table 59.0%Crown 38.6°Girdle: STK-VTKPavilion 34°Culet: NoneDepth 66.3%

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 6
Current: $2,073 NZD|Low: $700 NZD|High: $2,103 NZD|Avg: $1,218 NZD|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 4$700 NZD
Retailer 5$873 NZD
Retailer 2$967 NZD
Retailer 3$1,551 NZD
MOH London$2,073 NZD

38 data points across 5 retailers

5 retailers$700 NZD to $2,073 NZD

B+
Cheapest Retailer
-
$700 NZD
A
Retailer 2
-
$873 NZD
View
A
Retailer 3
-
$967 NZD
View
B+
Retailer 4
-
$1,551 NZD
View
Most Expensive
B
MOH London
LG750586531 · Nov 5
$2,073 NZD
£905 GBP
View
4 more retailers have this diamond
Prices start from $700 NZDSave up to $1,373 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
$700 NZD