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Cushion|Lab Grown|IGI

1.60ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG539232875

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG539232875

Diamond specifications and retailer prices

From $390 NZD
$220 USD
As of November 1, 2026
Save $2,165 NZD (85%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,555 NZD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.6ct lab-grown cushion diamond

This 1.6ct 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 LG539232875 or 539232875. Listed at 15 retailers as of October 31, 2026, with prices from $390 to $2,555, a $2,165 spread on the same certified stone. Brilliant Earth lists it at $2,555. 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

1.60
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.6°
Pavilion angle31.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG539232875
Dimensions7.90 × 5.95 × 3.93 mm
L/W Ratio1.33
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
7.90 mm5.95 mm1.60 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG539232875
Side View
Table 60.0%Crown 38.6°Girdle: THK-VTKPavilion 31.2°Culet: NoneDepth 66.1%

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 1
Current: $2,555 NZD|Low: $390 NZD|High: $2,697 NZD|Avg: $1,113 NZD|-5.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 3$390 NZD
Retailer 11$433 NZD
Retailer 5$483 NZD
Retailer 9$586 NZD
Retailer 7$710 NZD
Retailer 6$793 NZD
Retailer 4$874 NZD
Retailer 12$1,029 NZD
Retailer 8$1,045 NZD
Retailer 10$1,854 NZD
Retailer 2$2,028 NZD
Brilliant Earth$2,555 NZD

43 data points across 12 retailers

15 retailers$390 NZD to $2,555 NZD

A
Cheapest Retailer
-
$390 NZD
$220 USD
Final sale: no returns
Retailer 2
-
$433 NZD
$244 USD
View
Price last confirmed 7 days ago
A
Retailer 3
-
$483 NZD
£214 GBP
View
B+
Retailer 4
-
$586 NZD
$330 USD
View
A
Retailer 5
-
$710 NZD
€381 EUR
View
A
Retailer 6
-
$793 NZD
£352 GBP
View
A
Retailer 7
-
$874 NZD
$493 USD
View
A
Retailer 8
-
$960 NZD
$541 USD
View
B+
Retailer 9
-
$1,029 NZD
$580 USD
View
A
Retailer 10
-
$1,045 NZD
$589 USD
View
B+
Retailer 11
-
$1,489 NZD
$839 USD
View
Retailer 12
-
$1,854 NZD
$1,045 USD
View
Price last confirmed 11 days ago
B
Retailer 13
-
$2,028 NZD
£900 GBP
View
B
Retailer 14
-
$2,101 NZD
$1,184 USD
View
Most Expensive
B
Brilliant Earth
10789185A · Oct 31
$2,555 NZD
$1,440 USD
View
14 more retailers have this diamond
Prices start from $390 NZDSave up to $2,165 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
1.60ct Cushion
$390 NZD