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Cushion|Lab Grown|IGI

1.53ct D SI1 Cushion Lab Grown Diamond

EX • D/SI1 • IGI LG512220405

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG512220405

Diamond specifications and retailer prices

From $608 NZD
As of November 6, 2026
Save $1,371 NZD (69%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $1,979 NZD at MOH London · As of November 7, 2026
View at MOH London

About this 1.53ct lab-grown cushion diamond

This 1.53ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG512220405 or 512220405. Listed at 5 retailers as of November 6, 2026, with prices from $608 to $1,979, a $1,371 spread on the same certified stone. MOH London lists it at $1,979. 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

1.53
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG512220405
Dimensions6.83 × 6.65 × 4.39 mm
L/W Ratio1.03
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.83 mm6.65 mm1.53 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG512220405
Side View
Table 63.0%Crown 35.8°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 66.0%

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: $1,979 NZD|Low: $608 NZD|High: $2,014 NZD|Avg: $1,176 NZD|-0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 7, 2026
Retailer 4$608 NZD
Retailer 3$734 NZD
Retailer 5$891 NZD
Retailer 2$913 NZD
Retailer 6$1,905 NZD
MOH London$1,979 NZD

36 data points across 6 retailers

5 retailers$608 NZD to $1,979 NZD

B+
Cheapest Retailer
-
$608 NZD
A
Retailer 2
-
$734 NZD
View
A
Retailer 3
-
$913 NZD
View
B
Retailer 4
-
$1,905 NZD
View
Most Expensive
B
MOH London
LG512220405 · Nov 7
$1,979 NZD
£864 GBP
View
4 more retailers have this diamond
Prices start from $608 NZDSave up to $1,371 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
1.53ct Cushion
$608 NZD