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Radiant|Lab Grown|IGI

2.51ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG636468728

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

Certificate IGI LG636468728

Diamond specifications and retailer prices

From $1,241 CAD
£698 GBP
As of October 29, 2026
2 retailers carry this diamond
Most expensive: $3,122 CAD at Rare Carat
View at Rare Carat

About this 2.51ct lab-grown radiant diamond

This 2.51ct 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 LG636468728 or 636468728. 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

2.51
Carat
E
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.9°
Pavilion angle34.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG636468728
Dimensions9.62 × 6.78 × 4.59 mm
L/W Ratio1.42
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.62 mm6.78 mm2.51 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG636468728
Side View
Table 63.0%Crown 42.9°Girdle: MediumPavilion 34.7°Culet: NoneDepth 67.7%

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: $3,122 CAD|Low: $459 CAD|High: $5,990 CAD|Avg: $2,083 CAD
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
April 6, 2026
Retailer 2$547 CAD
Retailer 8$703 CAD
Retailer 3$894 CAD
Retailer 6$924 CAD
Retailer 5$1,163 CAD
Retailer 4$1,542 CAD
Retailer 7$1,726 CAD
Rare Carat$3,122 CAD
Retailer 9$3,723 CAD

55 data points across 9 retailers

2 retailers

B+
Cheapest Retailer
-
$1,241 CAD
£698 GBP
Most Expensive
B
Rare Carat
636468728
$3,122 CAD
$2,230 USD
View
1 more retailer has this diamond
Prices start from $1,241 CAD

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+
2.51ct Radiant
$1,241 CAD