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Radiant|Lab Grown|IGI

0.51ct D VS2 Radiant Lab Grown Diamond

EX • D/VS2 • IGI LG817666051

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

Certificate IGI LG817666051

Diamond specifications and retailer prices

From $282 AUD
As of November 4, 2026
Save $335 AUD (54%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $1,734 AUD at MOH London · As of November 1, 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 LG817666051 or 817666051. Listed at 10 retailers as of November 2, 2026, with a 119% 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
Colour
VS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.2°
Pavilion angle38.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817666051
Dimensions5.54 × 4.02 × 2.74 mm
L/W Ratio1.38
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
5.54 mm4.02 mm0.51 ctD / VS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817666051
Side View
Table 70.0%Crown 40.2°Girdle: Slightly ThickPavilion 38.8°Culet: NoneDepth 68.2%

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: Nov 4
Current: $1,734 AUD|Low: $221 AUD|High: $1,754 AUD|Avg: $542 AUD|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 4, 2026
Retailer 8$221 AUD
Retailer 9$282 AUD
Retailer 6$356 AUD
Retailer 4$366 AUD
Retailer 2$421 AUD
Retailer 10$428 AUD
Retailer 5$500 AUD
Retailer 3$513 AUD
Retailer 7$617 AUD
MOH London$1,734 AUD

44 data points across 10 retailers

10 retailers$282 AUD to $617 AUD

Retailer 1
-
$221 AUD
Price last confirmed 19 days ago
A
Retailer 2
-
$282 AUD
View
Retailer 3
-
$356 AUD
View
Price last confirmed 17 days ago
A
Retailer 4
-
$366 AUD
View
B+
Retailer 5
-
$421 AUD
View
Retailer 6
-
$428 AUD
View
Price last confirmed 8 days ago
B+
Retailer 7
-
$500 AUD
View
B+
Retailer 8
-
$513 AUD
View
B
Retailer 9
-
$617 AUD
View
Most Expensive
MOH London
LG817666051 · Nov 1
$1,734 AUD
£958 GBP
View
Price under review
9 more retailers have this diamond
Prices start from $282 AUDSave up to $335 AUD

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
$282 AUD