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Radiant|Lab Grown|IGI

2.31ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG666437106

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG666437106

Diamond specifications and retailer prices

From $2,557 SGD
£1,571 GBP
As of October 29, 2026
Save $1,596 SGD (38%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $4,153 SGD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 2.31ct lab-grown radiant diamond

This 2.31ct lab-grown radiant sits in the two to three carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG666437106 or 666437106. Listed at 2 retailers as of October 29, 2026, with prices from $2,557 to $4,153, a $1,596 spread on the same certified stone. Brilliant Earth lists it at $4,153. 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

2.31
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.8°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG666437106
Dimensions9.44 × 6.53 × 4.43 mm
L/W Ratio1.45
Culet sizeNone
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.44 mm6.53 mm2.31 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG666437106
Side View
Table 65.0%Crown 43.8°Girdle: ThinPavilion 36.4°Culet: NoneDepth 67.8%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 29
Current: $4,153 SGD|Low: $4,153 SGD|High: $4,499 SGD|Avg: $4,401 SGD|-7.7%
October 4, 2026
Brilliant Earth$4,153 SGD

8 data points across 1 retailer

2 retailers$2,557 SGD to $4,153 SGD

B
Cheapest Retailer
-
$2,557 SGD
£1,571 GBP
Most Expensive
B
Brilliant Earth
12629221Y · Oct 29
$4,153 SGD
$3,240 USD
View
1 more retailer has this diamond
Prices start from $2,557 SGDSave up to $1,596 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.

B
2.31ct Radiant
$2,557 SGD