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Radiant|Lab Grown|IGI

3.10ct D SI1 Radiant Lab Grown Diamond

ID • D/SI1 • IGI LG680593390

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

Certificate IGI LG680593390

Diamond specifications and retailer prices

From $1,724 SGD
£1,062 GBP
As of October 29, 2026
2 retailers carry this diamond
Most expensive: $4,491 SGD at Rare Carat
View at Rare Carat

About this 3.1ct lab-grown radiant diamond

This 3.1ct lab-grown radiant 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 LG680593390 or 680593390. Listed at 2 retailers as of October 29, 2026. 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

3.10
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.8°
Pavilion angle34.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG680593390
Dimensions9.88 × 7.27 × 4.92 mm
L/W Ratio1.36
Culet sizePointed
Top View
9.88 mm7.27 mm3.10 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG680593390
Side View
Table 63.0%Crown 44.8°Girdle: MediumPavilion 34.6°Culet: NoneDepth 67.7%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 29
Current: $959 SGD|Low: $345 SGD|High: $6,724 SGD|Avg: $1,568 SGD|-18.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
June 15, 2026
Retailer 9$831 SGD
Retailer 8$848 SGD
Retailer 1$959 SGD
Retailer 7$1,055 SGD
Retailer 4$1,105 SGD
Retailer 6$1,160 SGD
Retailer 3$1,345 SGD
Retailer 2$1,859 SGD
Retailer 5$6,712 SGD

66 data points across 9 retailers

2 retailers

B+
Cheapest Retailer
-
$1,724 SGD
£1,062 GBP
Most Expensive
Rare Carat
680593390
$4,491 SGD
$3,513 USD
View
1 more retailer has this diamond
Prices start from $1,724 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+
3.10ct Radiant
$1,724 SGD