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Cushion|Lab Grown|IGI

0.51ct D VS2 Cushion Lab Grown Diamond

VG • D/VS2 • IGI LG846609018

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

Certificate IGI LG846609018

Diamond specifications and retailer prices

From £228 GBP
As of November 1, 2026
Save £396 GBP (63%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £625 GBP 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 D colour (colourless) and VS2 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG846609018 or 846609018. Listed at 4 retailers as of October 29, 2026, with prices from £228 to £625, a £396 spread on the same certified stone. MOH London lists it at £625. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
D
Colour
VS2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.8°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846609018
Dimensions4.71 × 4.67 × 3.10 mm
L/W Ratio1.01
Girdle conditionFaceted
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
4.71 mm4.67 mm0.51 ctD / VS2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846609018
Side View
Table 61.0%Crown 31.8°Girdle: MED-THKPavilion 40.5°CuletDepth 66.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £625 GBP|Low: £220 GBP|High: £625 GBP|Avg: £354 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 1, 2026
Retailer 2£228 GBP
Retailer 4£247 GBP
Retailer 3£422 GBP
MOH London£625 GBP

10 data points across 4 retailers

4 retailers£228 GBP to £625 GBP

B+
Cheapest Retailer
-
£228 GBP
B+
Retailer 2
-
£247 GBP
$331 USD
View
B
Retailer 3
-
£422 GBP
$565 USD
View
Most Expensive
C
MOH London
LG846609018 · Oct 29
£625 GBP
View
3 more retailers have this diamond
Prices start from £228 GBPSave up to £396 GBP

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.

B+
0.51ct Cushion
£228 GBP