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Radiant|Lab Grown|IGI

0.51ct D VS2 Radiant Lab Grown Diamond

EX • D/VS2 • IGI LG817635555

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

Certificate IGI LG817635555

Diamond specifications and retailer prices

From $155 USD
As of October 25, 2026
Save $371 USD (71%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $1,223 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 VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG817635555 or 817635555. Listed at 12 retailers as of October 25, 2026, with a 239% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
VS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.5°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817635555
Dimensions5.48 × 4.01 × 2.73 mm
L/W Ratio1.37
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
5.48 mm4.01 mm0.51 ctD / VS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817635555
Side View
Table 67.0%Crown 46.5°Girdle: MED-STKPavilion 39.6°Culet: NoneDepth 68.1%

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 25
Current: $1,223 USD|Low: $155 USD|High: $1,231 USD|Avg: $385 USD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 7$155 USD
Retailer 3$198 USD
Retailer 6$250 USD
Retailer 4$260 USD
Retailer 2$298 USD
Retailer 10$300 USD
Retailer 5$352 USD
Retailer 11$374 USD
Retailer 8$400 USD
Retailer 9$433 USD
MOH London$1,223 USD

43 data points across 11 retailers

12 retailers$155 USD to $526 USD

A
Cheapest Retailer
-
$155 USD
A
Retailer 2
-
$198 USD
View
Retailer 3
-
$250 USD
View
Price last confirmed 12 days ago
B+
Retailer 4
-
$260 USD
€248 EUR
View
B+
Retailer 5
-
$298 USD
£235 GBP
View
B+
Retailer 6
-
$300 USD
A$462 AUD
View
B+
Retailer 7
-
$352 USD
£277 GBP
View
B+
Retailer 8
-
$374 USD
View
B+
Retailer 9
-
$400 USD
View
B
Retailer 10
-
$433 USD
View
B
Retailer 11
-
$526 USD
View
Most Expensive
MOH London
LG817635555 · Oct 29
$1,223 USD
£963 GBP
View
Price under review
11 more retailers have this diamond
Prices start from $155 USDSave up to $371 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
$155 USD