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Cushion|Lab Grown|IGI

3.23ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG629454997

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG629454997

Diamond specifications and retailer prices

From $602 SGD
$471 USD
As of October 29, 2026
Save $3,923 SGD (87%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $4,526 SGD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 3.23ct lab-grown cushion diamond

This 3.23ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG629454997 or 629454997. Listed at 12 retailers as of October 29, 2026, with prices from $602 to $4,526, a $3,923 spread on the same certified stone. Brilliant Earth lists it at $4,526. 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

3.23
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.4°
Pavilion angle38.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG629454997
Dimensions8.63 × 8.39 × 5.65 mm
L/W Ratio1.03
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.63 mm8.39 mm3.23 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG629454997
Side View
Table 63.0%Crown 38.4°Girdle: STK-THKPavilion 38.4°Culet: NoneDepth 67.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: $4,526 SGD|Low: $602 SGD|High: $6,481 SGD|Avg: $1,578 SGD|-30.2%
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 4$602 SGD
Retailer 3$666 SGD
Retailer 10$1,000 SGD
Retailer 7$1,010 SGD
Retailer 9$1,029 SGD
Retailer 2$1,036 SGD
Retailer 5$1,121 SGD
Retailer 12$1,689 SGD
Retailer 11$2,075 SGD
Retailer 8$2,176 SGD
Retailer 6$2,479 SGD
Brilliant Earth$4,526 SGD

44 data points across 12 retailers

12 retailers$602 SGD to $4,526 SGD

A
Cheapest Retailer
-
$602 SGD
$471 USD
Final sale: no returns
A
Retailer 2
-
$666 SGD
$521 USD
View
B+
Retailer 3
-
$1,000 SGD
$782 USD
View
A
Retailer 4
-
$1,010 SGD
$790 USD
View
A
Retailer 5
-
$1,029 SGD
$805 USD
View
A
Retailer 6
-
$1,036 SGD
£638 GBP
View
A
Retailer 7
-
$1,121 SGD
€835 EUR
View
B+
Retailer 8
-
$1,689 SGD
$1,321 USD
View
B+
Retailer 9
-
$2,075 SGD
$1,623 USD
View
B+
Retailer 10
-
$2,176 SGD
$1,702 USD
View
B+
Retailer 11
-
$2,479 SGD
£1,527 GBP
View
Most Expensive
B
Brilliant Earth
14069332A · Oct 30
$4,526 SGD
$3,540 USD
View
11 more retailers have this diamond
Prices start from $602 SGDSave up to $3,923 SGD

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
3.23ct Cushion
$602 SGD