Radiant|Lab Grown|IGI

0.51ct D VS1 Radiant Lab Grown Diamond

ID • D/VS1 • IGI LG840661748

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

Certificate IGI LG840661748

Diamond specifications and retailer prices

From $250 USD
€238 EUR
As of October 23, 2026
Save $61 USD (20%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $899 USD at MOH London · As of October 19, 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 VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG840661748 or 840661748. Listed at 11 retailers as of October 23, 2026, with a relatively tight 24% spread, which is unusual at this carat range and suggests competitive pricing across the listings. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

0.51
Carat
D
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle38°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840661748
Dimensions5.64 × 3.98 × 2.66 mm
L/W Ratio1.42
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.64 mm3.98 mm0.51 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840661748
Side View
Table 66.0%Crown 36.3°Girdle: Slightly ThickPavilion 38°Culet: NoneDepth 66.8%

Caratlytics Score

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

Price History

Last verified: Oct 23
Current: $899 USD|Low: $165 USD|High: $899 USD|Avg: $326 USD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 23, 2026
Retailer 11$165 USD
Retailer 3$218 USD
Retailer 6$220 USD
Retailer 2$250 USD
Retailer 10$280 USD
Retailer 9$311 USD
Retailer 5$339 USD
Retailer 7$339 USD
Retailer 8$427 USD
Retailer 4$444 USD
MOH London$899 USD

15 data points across 11 retailers

11 retailers$250 USD to $311 USD

A
Retailer 1
-
$165 USD
Price last confirmed 11 days ago
Returns within 30 days
A
Retailer 2
-
$218 USD
ZAR 3,519 ZAR
View
Price last confirmed 11 days ago
Returns within 7 days
A
Retailer 3
-
$220 USD
£173 GBP
View
Price last confirmed 9 days ago
Returns within 30 days
A
Retailer 4
-
$250 USD
€238 EUR
View
Returns within 100 days
A
Retailer 5
-
$280 USD
View
Price last confirmed 10 days ago
Returns within 30 days
B+
Retailer 6
-
$311 USD
£245 GBP
View
Returns within 30 days
B+
Retailer 7
-
$339 USD
SGD 458 SGD
View
Price last confirmed 9 days ago
Returns within 14 days
B+
Retailer 8
-
$339 USD
View
Price last confirmed 9 days ago
Returns within 30 days
B+
Retailer 9
-
$427 USD
View
Price last confirmed 9 days ago
Returns within 30 days
B+
Retailer 10
-
$444 USD
View
Price last confirmed 9 days ago
Returns within 90 days
Most Expensive
B
MOH London
LG840661748 · Oct 19
$899 USD
£708 GBP
View
Price last confirmed 10 days ago
10 more retailers have this diamond
Prices start from $250 USDSave up to $61 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
$250 USD