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Cushion|Lab Grown|IGI

1.50ct E SI1 Cushion Lab Grown Diamond

EX • E/SI1 • IGI LG784633426

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG784633426

Diamond specifications and retailer prices

From $348 NZD
As of November 6, 2026
Save $1,457 NZD (81%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,805 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 LG784633426 or 784633426. Listed at 14 retailers as of November 5, 2026, with prices from $348 to $1,805, a $1,457 spread on the same certified stone. MOH London lists it at $1,805. 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 angle34.4°
Pavilion angle36.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG784633426
Dimensions8.04 × 5.87 × 3.75 mm
L/W Ratio1.37
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.04 mm5.87 mm1.50 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG784633426
Side View
Table 60.0%Crown 34.4°Girdle: MED-STKPavilion 36.7°Culet: NoneDepth 63.9%

Caratlytics Score

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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: $1,805 NZD|Low: $348 NZD|High: $1,930 NZD|Avg: $1,016 NZD|-2.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 8$348 NZD
Retailer 6$492 NZD
Retailer 2$640 NZD
Retailer 7$680 NZD
Retailer 9$689 NZD
Retailer 4$731 NZD
Retailer 11$814 NZD
Retailer 5$860 NZD
Retailer 10$983 NZD
Retailer 13$1,268 NZD
Retailer 3$1,533 NZD
Retailer 12$1,660 NZD
MOH London$1,805 NZD

44 data points across 13 retailers

14 retailers$348 NZD to $1,805 NZD

A
Cheapest Retailer
-
$348 NZD
Final sale: no returns
A
Retailer 2
-
$438 NZD
View
A
Retailer 3
-
$492 NZD
View
A
Retailer 4
-
$640 NZD
View
A
Retailer 5
-
$680 NZD
View
B+
Retailer 6
-
$689 NZD
View
Retailer 7
-
$731 NZD
View
Price last confirmed 23 days ago
A
Retailer 8
-
$814 NZD
View
Retailer 9
-
$860 NZD
View
Price last confirmed 11 days ago
A
Retailer 10
-
$983 NZD
View
B+
Retailer 11
-
$1,268 NZD
View
Retailer 12
-
$1,533 NZD
View
Price last confirmed 16 days ago
B
Retailer 13
-
$1,660 NZD
View
Most Expensive
B
MOH London
LG784633426 · Nov 5
$1,805 NZD
£788 GBP
View
13 more retailers have this diamond
Prices start from $348 NZDSave up to $1,457 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
$348 NZD