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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 $220 USD
As of October 30, 2026
Save $1,220 USD (85%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $1,440 USD at Brilliant Earth · As of October 29, 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 29, 2026, with prices from $220 to $1,440, a $1,220 spread on the same certified stone. Brilliant Earth lists it at $1,440. 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
Color
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: Oct 30
Current: $1,440 USD|Low: $220 USD|High: $1,540 USD|Avg: $633 USD|-6.5%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 30, 2026
Retailer 3$220 USD
Retailer 11$244 USD
Retailer 2$273 USD
Retailer 7$330 USD
Retailer 6$403 USD
Retailer 5$447 USD
Retailer 4$493 USD
Retailer 12$580 USD
Retailer 10$623 USD
Retailer 9$1,045 USD
Retailer 8$1,144 USD
Brilliant Earth$1,440 USD

43 data points across 12 retailers

15 retailers$220 USD to $1,440 USD

A
Cheapest Retailer
-
$220 USD
Final sale: no returns
A
Retailer 2
-
$244 USD
View
A
Retailer 3
-
$273 USD
£215 GBP
View
B+
Retailer 4
-
$330 USD
View
A
Retailer 5
-
$403 USD
€384 EUR
View
A
Retailer 6
-
$447 USD
£352 GBP
View
A
Retailer 7
-
$493 USD
View
A
Retailer 8
-
$541 USD
View
B+
Retailer 9
-
$580 USD
View
B+
Retailer 10
-
$623 USD
View
B+
Retailer 11
-
$839 USD
View
Retailer 12
-
$1,045 USD
View
Price last confirmed 9 days ago
B
Retailer 13
-
$1,144 USD
£901 GBP
View
B
Retailer 14
-
$1,184 USD
View
Most Expensive
B
Brilliant Earth
10789185A · Oct 29
$1,440 USD
View
14 more retailers have this diamond
Prices start from $220 USDSave up to $1,220 USD

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
$220 USD