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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 $313 AUD
$220 USD
As of October 30, 2026
Save $1,737 AUD (85%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,050 AUD 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 $313 to $2,050, a $1,737 spread on the same certified stone. Brilliant Earth lists it at $2,050. 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: Oct 30
Current: $2,050 AUD|Low: $313 AUD|High: $2,164 AUD|Avg: $890 AUD|-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
October 31, 2026
Retailer 3$313 AUD
Retailer 11$347 AUD
Retailer 7$388 AUD
Retailer 8$470 AUD
Retailer 2$570 AUD
Retailer 5$636 AUD
Retailer 4$702 AUD
Retailer 12$826 AUD
Retailer 6$839 AUD
Retailer 10$1,488 AUD
Retailer 9$1,629 AUD
Brilliant Earth$2,050 AUD

44 data points across 12 retailers

15 retailers$313 AUD to $2,050 AUD

A
Cheapest Retailer
-
$313 AUD
$220 USD
Final sale: no returns
A
Retailer 2
-
$347 AUD
$244 USD
View
A
Retailer 3
-
$388 AUD
£215 GBP
View
B+
Retailer 4
-
$470 AUD
$330 USD
View
A
Retailer 5
-
$570 AUD
€381 EUR
View
A
Retailer 6
-
$636 AUD
£352 GBP
View
A
Retailer 7
-
$702 AUD
$493 USD
View
A
Retailer 8
-
$770 AUD
$541 USD
View
B+
Retailer 9
-
$826 AUD
$580 USD
View
A
Retailer 10
-
$839 AUD
$589 USD
View
B+
Retailer 11
-
$1,195 AUD
$839 USD
View
Retailer 12
-
$1,488 AUD
$1,045 USD
View
Price last confirmed 10 days ago
B
Retailer 13
-
$1,629 AUD
£901 GBP
View
B
Retailer 14
-
$1,686 AUD
$1,184 USD
View
Most Expensive
B
Brilliant Earth
10789185A · Oct 29
$2,050 AUD
$1,440 USD
View
14 more retailers have this diamond
Prices start from $313 AUDSave up to $1,737 AUD

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
$313 AUD