Radiant|Lab Grown|IGI

0.51ct D SI1 Radiant Lab Grown Diamond

EX • D/SI1 • IGI LG843636772

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

Certificate IGI LG843636772

Diamond specifications and retailer prices

From $92 USD
As of October 27, 2026
Save $736 USD (89%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $828 USD at MOH London · As of October 29, 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 LG843636772 or 843636772. Listed at 11 retailers as of October 27, 2026, with prices from $92 to $828, a $736 spread on the same certified stone. MOH London lists it at $828. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843636772
Dimensions5.60 × 3.98 × 2.70 mm
L/W Ratio1.41
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.60 mm3.98 mm0.51 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843636772
Side View
Table 64.0%Crown 34.7°Girdle: Slightly ThickPavilion 39.9°Culet: NoneDepth 67.8%

Caratlytics Score

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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 27
Current: $828 USD|Low: $92 USD|High: $846 USD|Avg: $299 USD|-2.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 8$92 USD
Retailer 11$104 USD
Retailer 2$119 USD
Retailer 7$155 USD
Retailer 9$215 USD
Retailer 6$275 USD
Retailer 4$320 USD
Retailer 5$360 USD
Retailer 3$412 USD
Retailer 10$422 USD
MOH London$828 USD

5 data points across 11 retailers

11 retailers$92 USD to $828 USD

A
Cheapest Retailer
-
$92 USD
A
Retailer 2
-
$104 USD
View
Final sale: no returns
A
Retailer 3
-
$119 USD
View
A
Retailer 4
-
$155 USD
View
A
Retailer 5
-
$215 USD
£169 GBP
View
A
Retailer 6
-
$275 USD
£217 GBP
View
B+
Retailer 7
-
$320 USD
SGD 432 SGD
View
Retailer 8
-
$360 USD
View
B
Retailer 9
-
$412 USD
View
B
Retailer 10
-
$422 USD
View
Most Expensive
B
MOH London
LG843636772 · Oct 29
$828 USD
£652 GBP
View
10 more retailers have this diamond
Prices start from $92 USDSave up to $736 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.

A
0.51ct Radiant
$92 USD