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Radiant|Lab Grown|IGI

0.51ct D SI1 Radiant Lab Grown Diamond

ID • D/SI1 • IGI LG762555331

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

Certificate IGI LG762555331

Diamond specifications and retailer prices

From $374 CAD
$268 USD
As of October 30, 2026
Save $1,203 CAD (76%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $1,577 CAD at MOH London · As of October 26, 2026
View at MOH London

About this 0.51ct lab-grown radiant diamond

This 0.51ct lab-grown radiant sits in the half to three-quarter carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG762555331 or 762555331. Listed at 8 retailers as of October 26, 2026, with prices from $374 to $1,577, a $1,203 spread on the same certified stone. MOH London lists it at $1,577. 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

0.51
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.3°
Pavilion angle34.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG762555331
Dimensions5.71 × 4.02 × 2.59 mm
L/W Ratio1.42
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
5.71 mm4.02 mm0.51 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG762555331
Side View
Table 68.0%Crown 40.3°Girdle: ThickPavilion 34.8°Culet: NoneDepth 64.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $1,577 CAD|Low: $337 CAD|High: $1,593 CAD|Avg: $557 CAD|+0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 30, 2026
Retailer 6$349 CAD
Retailer 7$374 CAD
Retailer 5$375 CAD
Retailer 3$377 CAD
Retailer 2$447 CAD
Retailer 4$455 CAD
Retailer 8$510 CAD
MOH London$1,577 CAD

42 data points across 8 retailers

8 retailers$374 CAD to $1,577 CAD

Retailer 1
-
$349 CAD
$250 USD
Price last confirmed 12 days ago
A
Retailer 2
-
$374 CAD
$268 USD
View
Retailer 3
-
$375 CAD
€256 EUR
View
Price last confirmed 8 days ago
A
Retailer 4
-
$377 CAD
£212 GBP
View
B+
Retailer 5
-
$447 CAD
$320 USD
View
B+
Retailer 6
-
$455 CAD
£257 GBP
View
B+
Retailer 7
-
$510 CAD
$365 USD
View
Most Expensive
B
MOH London
LG762555331 · Oct 26
$1,577 CAD
£889 GBP
View
7 more retailers have this diamond
Prices start from $374 CADSave up to $1,203 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.

A
0.51ct Radiant
$374 CAD