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Radiant|Lab Grown|IGI

1.39ct D SI1 Radiant Lab Grown Diamond

ID • D/SI1 • IGI LG659423794

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

Certificate IGI LG659423794

Diamond specifications and retailer prices

From $664 SGD
£409 GBP
As of October 29, 2026
1 retailer carries this diamond
Only listing: $664 SGD at Diamond Quarter
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Diamond Quarter

About this 1.39ct lab-grown radiant diamond

This 1.39ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG659423794 or 659423794. Listed at a single retailer as of October 29, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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

1.39
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.2°
Pavilion angle35.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG659423794
Dimensions7.61 × 5.64 × 3.82 mm
L/W Ratio1.35
Top View
7.61 mm5.64 mm1.39 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG659423794
Side View
Table 64.0%Crown 43.2°Girdle: MediumPavilion 35.2°Culet: NoneDepth 67.7%

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: $395 SGD|Low: $395 SGD|High: $2,250 SGD|Avg: $1,394 SGD
Retailer 1
Retailer 2
January 4, 2026
Retailer 1$395 SGD
Retailer 2$2,250 SGD

7 data points across 2 retailers

1 retailer

B
Diamond Quarter
1.39SI1DLG94B490N · Oct 29
$664 SGD
£409 GBP
View

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
1.39ct Radiant
$664 SGD