Radiant|Lab Grown|IGI

1.97ct D SI1 Radiant Lab Grown Diamond

ID • D/SI1 • IGI LG658490635

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

Certificate IGI LG658490635

Diamond specifications and retailer prices

From $760 USD
£598 GBP
As of October 29, 2026
2 retailers carry this diamond
Most expensive: $1,685 USD at Rare Carat
View at Rare Carat

About this 1.97ct lab-grown radiant diamond

This 1.97ct lab-grown radiant sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG658490635 or 658490635. 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

1.97
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46°
Pavilion angle35.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG658490635
Dimensions8.79 × 6.13 × 4.12 mm
L/W Ratio1.43
Culet sizePointed
Top View
8.79 mm6.13 mm1.97 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG658490635
Side View
Table 67.0%Crown 46°Girdle: MediumPavilion 35.9°Culet: NoneDepth 67.2%

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: $434 USD|Low: $153 USD|High: $2,950 USD|Avg: $940 USD|-28.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
June 11, 2026
Retailer 6$396 USD
Retailer 1$434 USD
Retailer 9$485 USD
Retailer 5$536 USD
Retailer 2$574 USD
Retailer 3$707 USD
Retailer 8$785 USD
Retailer 4$1,072 USD
Retailer 7$2,910 USD

66 data points across 9 retailers

2 retailers

B+
Cheapest Retailer
-
$760 USD
£598 GBP
Most Expensive
Rare Carat
658490635
$1,685 USD
View
1 more retailer has this diamond
Prices start from $760 USD

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+
1.97ct Radiant
$760 USD