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Cushion|Lab Grown|IGI

0.51ct F SI2 Cushion Lab Grown Diamond

ID • F/SI2 • IGI LG436073162

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG436073162

Diamond specifications and retailer prices

From $550 NZD
$310 USD
As of November 2, 2026
Save $626 NZD (53%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $2,569 NZD at MOH London · As of October 29, 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 F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG436073162 or 436073162. Listed at 5 retailers as of October 31, 2026, with a 114% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.51
Carat
F
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.2°
Pavilion angle42.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG436073162
Dimensions4.82 × 4.49 × 3.07 mm
L/W Ratio1.07
Girdle conditionFaceted
Culet sizePointed
Cert comments
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Top View
4.82 mm4.49 mm0.51 ctF / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG436073162
Side View
Table 58.5%Crown 34.2°Girdle: MED-THKPavilion 42.1°Culet: NoneDepth 68.4%

Caratlytics Score

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

Price History

Last verified: Nov 2
Current: $2,569 NZD|Low: $550 NZD|High: $2,585 NZD|Avg: $1,226 NZD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 31, 2026
Retailer 3$550 NZD
Retailer 4$637 NZD
Retailer 5$1,049 NZD
Retailer 7$1,092 NZD
Retailer 2$1,176 NZD
Retailer 6$1,274 NZD
MOH London$2,569 NZD

18 data points across 7 retailers

5 retailers$550 NZD to $1,176 NZD

A
Cheapest Retailer
-
$550 NZD
$310 USD
Retailer 2
-
$637 NZD
$359 USD
View
Price last confirmed 8 days ago
B
Retailer 3
-
$1,049 NZD
$591 USD
View
B
Retailer 4
-
$1,176 NZD
€631 EUR
View
Most Expensive
MOH London
LG436073162 · Oct 29
$2,569 NZD
£1,140 GBP
View
Price under review
4 more retailers have this diamond
Prices start from $550 NZDSave up to $626 NZD

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
$550 NZD