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Cushion|Lab Grown|IGI

0.51ct H VS1 Cushion Lab Grown Diamond

ID • H/VS1 • IGI LG851653932

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG851653932

Diamond specifications and retailer prices

From $307 AUD
As of November 4, 2026
Save $503 AUD (62%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $1,890 AUD at MOH London · As of November 5, 2026
View at MOH London

About this 0.51ct lab-grown cushion diamond

This 0.51ct lab-grown cushion sits in the half to three-quarter carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG851653932 or 851653932. Listed at 6 retailers as of November 4, 2026, with a 164% 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
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle39.5°
Pavilion angle31.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG851653932
Dimensions4.64 × 4.46 × 2.72 mm
L/W Ratio1.04
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
4.64 mm4.46 mm0.51 ctH / VS1
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG851653932
Side View
Table 73.0%Crown 39.5°Girdle: MED-STKPavilion 31.5°CuletDepth 61.0%

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: $1,890 AUD|Low: $307 AUD|High: $1,896 AUD|Avg: $707 AUD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 5, 2026
Retailer 2$307 AUD
Retailer 4$364 AUD
Retailer 5$404 AUD
Retailer 3$547 AUD
Retailer 6$810 AUD
MOH London$1,890 AUD

6 data points across 6 retailers

6 retailers$307 AUD to $810 AUD

A
Cheapest Retailer
-
$307 AUD
B+
Retailer 2
-
$364 AUD
View
B+
Retailer 3
-
$404 AUD
View
B
Retailer 4
-
$547 AUD
View
B
Retailer 5
-
$810 AUD
View
Most Expensive
MOH London
LG851653932 · Nov 5
$1,890 AUD
£1,042 GBP
View
Price under review
5 more retailers have this diamond
Prices start from $307 AUDSave up to $503 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 Cushion
$307 AUD