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Radiant|Lab Grown|IGI

1.71ct F SI1 Radiant Lab Grown Diamond

EX • F/SI1 • IGI LG662422012

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

Certificate IGI LG662422012

Diamond specifications and retailer prices

From $707 SGD
$553 USD
As of November 2, 2026
Save $279 SGD (28%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $987 SGD at Diamond Quarter · As of November 2, 2026
View at Diamond Quarter

About this 1.71ct lab-grown radiant diamond

This 1.71ct 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 LG662422012 or 662422012. Listed at 2 retailers as of November 2, 2026, with prices from $707 to $987, a $279 spread on the same certified stone. Diamond Quarter lists it at $987. 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

1.71
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.2°
Pavilion angle36.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG662422012
Dimensions8.15 × 5.91 × 4.04 mm
L/W Ratio1.38
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.15 mm5.91 mm1.71 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG662422012
Side View
Table 69.0%Crown 43.2°Girdle: MediumPavilion 36.5°Culet: NoneDepth 68.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 2
Current: $707 SGD|Low: $692 SGD|High: $1,040 SGD|Avg: $809 SGD|-32.0%
September 23, 2026
Retailer 1$707 SGD

4 data points across 1 retailer

2 retailers$707 SGD to $987 SGD

A
Cheapest Retailer
-
$707 SGD
$553 USD
Most Expensive
B
Diamond Quarter
1.71SI1FLG128033N · Nov 2
$987 SGD
£608 GBP
View
1 more retailer has this diamond
Prices start from $707 SGDSave up to $279 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
1.71ct Radiant
$707 SGD