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Radiant|Lab Grown|IGI

0.51ct D VS2 Radiant Lab Grown Diamond

EX • D/VS2 • IGI LG817666139

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

Certificate IGI LG817666139

Diamond specifications and retailer prices

From $282 AUD
As of November 4, 2026
Save $466 AUD (62%) 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 LG817666139 or 817666139. Listed at 10 retailers as of November 4, 2026, with a 165% 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 angle41°
Pavilion angle38.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817666139
Dimensions5.59 × 3.97 × 2.67 mm
L/W Ratio1.41
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
5.59 mm3.97 mm0.51 ctD / VS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817666139
Side View
Table 62.0%Crown 41°Girdle: MediumPavilion 38.9°Culet: NoneDepth 67.3%

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: $282 AUD|High: $1,754 AUD|Avg: $591 AUD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 4, 2026
Retailer 9$282 AUD
Retailer 6$356 AUD
Retailer 4$366 AUD
Retailer 2$421 AUD
Retailer 8$428 AUD
Retailer 5$500 AUD
Retailer 3$513 AUD
Retailer 7$617 AUD
MOH London$1,734 AUD

45 data points across 9 retailers

10 retailers$282 AUD to $748 AUD

A
Cheapest Retailer
-
$282 AUD
Retailer 2
-
$356 AUD
View
Price last confirmed 17 days ago
A
Retailer 3
-
$366 AUD
View
B+
Retailer 4
-
$421 AUD
View
Retailer 5
-
$428 AUD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$500 AUD
View
B+
Retailer 7
-
$513 AUD
View
B
Retailer 8
-
$617 AUD
View
B
Retailer 9
-
$748 AUD
View
Most Expensive
MOH London
LG817666139 · Nov 1
$1,734 AUD
£958 GBP
View
Price under review
9 more retailers have this diamond
Prices start from $282 AUDSave up to $466 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