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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 $983 NZD
$553 USD
As of November 2, 2026
Save $388 NZD (28%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $1,371 NZD 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 $983 to $1,371, a $388 spread on the same certified stone. Diamond Quarter lists it at $1,371. 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: $983 NZD|Low: $962 NZD|High: $1,445 NZD|Avg: $1,124 NZD|-32.0%
September 23, 2026
Retailer 1$983 NZD

4 data points across 1 retailer

2 retailers$983 NZD to $1,371 NZD

A
Cheapest Retailer
-
$983 NZD
$553 USD
Most Expensive
B
Diamond Quarter
1.71SI1FLG128033N · Nov 2
$1,371 NZD
£608 GBP
View
1 more retailer has this diamond
Prices start from $983 NZDSave up to $388 NZD

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
$983 NZD