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Radiant|Lab Grown|IGI

2.57ct E SI1 Radiant Lab Grown Diamond

EX • E/SI1 • IGI LG637445406

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

Certificate IGI LG637445406

Diamond specifications and retailer prices

From $906 USD
£714 GBP
As of October 28, 2026
1 retailer carries this diamond
Only listing: $906 USD 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 2.57ct lab-grown radiant diamond

This 2.57ct lab-grown radiant sits in the two to three carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG637445406 or 637445406. Listed at a single retailer as of October 28, 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

2.57
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.7°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG637445406
Dimensions9.69 × 6.80 × 4.51 mm
L/W Ratio1.43
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.69 mm6.80 mm2.57 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG637445406
Side View
Table 66.0%Crown 42.7°Girdle: MediumPavilion 35°CuletDepth 66.3%

Caratlytics Score

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

Last verified: Oct 28
Current: $906 USD|Low: $906 USD|High: $906 USD|Avg: $906 USD
September 26, 2026
Diamond Quarter$906 USD

1 data point across 1 retailer

1 retailer

B+
Diamond Quarter
2.57SI1ELG065BC0N · Oct 28
$906 USD
£714 GBP
View

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B+
2.57ct Radiant
$906 USD