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Cushion|Lab Grown|IGI

4.57ct F SI1 Cushion Lab Grown Diamond

EX • F/SI1 • IGI LG644434421

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG644434421

Diamond specifications and retailer prices

From $953 SGD
$745 USD
As of November 2, 2026
Save $3,600 SGD (79%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $4,553 SGD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 4.57ct lab-grown cushion diamond

This 4.57ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG644434421 or 644434421. Listed at 8 retailers as of November 2, 2026, with prices from $953 to $4,553, a $3,600 spread on the same certified stone. Brilliant Earth lists it at $4,553. 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

4.57
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG644434421
Dimensions12.07 × 8.90 × 5.85 mm
L/W Ratio1.36
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.07 mm8.90 mm4.57 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG644434421
Side View
Table 61.0%Crown 34.7°Girdle: MED-THKPavilion 36.4°Culet: NoneDepth 65.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 2
Current: $4,553 SGD|Low: $673 SGD|High: $8,863 SGD|Avg: $2,193 SGD|-48.6%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 6$673 SGD
Retailer 8$776 SGD
Retailer 5$953 SGD
Retailer 7$1,210 SGD
Retailer 4$1,260 SGD
Retailer 2$1,291 SGD
Retailer 9$1,327 SGD
Retailer 10$1,733 SGD
Retailer 3$3,242 SGD
Brilliant Earth$4,553 SGD

36 data points across 10 retailers

8 retailers$953 SGD to $4,553 SGD

A
Cheapest Retailer
-
$953 SGD
$745 USD
B+
Retailer 2
-
$1,210 SGD
$946 USD
View
A
Retailer 3
-
$1,260 SGD
€938 EUR
View
A
Retailer 4
-
$1,291 SGD
£795 GBP
View
A
Retailer 5
-
$1,327 SGD
$1,038 USD
View
B+
Retailer 6
-
$1,733 SGD
$1,355 USD
View
B
Retailer 7
-
$3,242 SGD
£1,996 GBP
View
Most Expensive
B
Brilliant Earth
11882263A · Nov 2
$4,553 SGD
$3,560 USD
View
7 more retailers have this diamond
Prices start from $953 SGDSave up to $3,600 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
4.57ct Cushion
$953 SGD