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Radiant|Lab Grown|IGI

1.59ct F SI1 Radiant Lab Grown Diamond

EX • F/SI1 • IGI LG673420825

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

Certificate IGI LG673420825

Diamond specifications and retailer prices

From $830 SGD
£510 GBP
As of November 5, 2026
1 retailer carries this diamond
Only listing: $830 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 1.59ct lab-grown radiant diamond

This 1.59ct lab-grown radiant sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG673420825 or 673420825. Listed at a single retailer as of November 5, 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

1.59
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle47.3°
Pavilion angle34.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG673420825
Dimensions8.13 × 5.84 × 3.87 mm
L/W Ratio1.39
Top View
8.13 mm5.84 mm1.59 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG673420825
Side View
Table 65.0%Crown 47.3°Girdle: MediumPavilion 34.9°CuletDepth 66.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 5
Current: $830 SGD|Low: $830 SGD|High: $830 SGD|Avg: $830 SGD
September 26, 2026
Diamond Quarter$830 SGD

1 data point across 1 retailer

1 retailer

B+
Diamond Quarter
1.59SI1FLG256D38N · Nov 5
$830 SGD
£510 GBP
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B+
1.59ct Radiant
$830 SGD