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Radiant|Lab Grown|IGI

1.57ct D SI1 Radiant Lab Grown Diamond

ID • D/SI1 • IGI LG651474253

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

Certificate IGI LG651474253

Diamond specifications and retailer prices

From $958 CAD
£539 GBP
As of October 29, 2026
1 retailer carries this diamond
Only listing: $958 CAD 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 1.57ct lab-grown radiant diamond

This 1.57ct 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 LG651474253 or 651474253. 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

1.57
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.4°
Pavilion angle35.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG651474253
Dimensions8.40 × 5.77 × 3.83 mm
L/W Ratio1.46
Culet sizePointed
Top View
8.40 mm5.77 mm1.57 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG651474253
Side View
Table 67.0%Crown 43.4°Girdle: MediumPavilion 35.9°Culet: NoneDepth 66.4%

Caratlytics Score

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

Last verified: Oct 29
Current: $415 CAD|Low: $157 CAD|High: $1,267 CAD|Avg: $693 CAD|-24.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
June 12, 2026
Retailer 1$415 CAD
Retailer 2$469 CAD
Retailer 4$568 CAD
Retailer 5$687 CAD
Retailer 3$743 CAD
Retailer 7$759 CAD
Retailer 6$970 CAD

71 data points across 7 retailers

1 retailer

B+
Diamond Quarter
1.57SI1DLG539A59N · Oct 29
$958 CAD
£539 GBP
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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+
1.57ct Radiant
$958 CAD