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Cushion|Lab Grown|IGI

0.40ct D VS2 Cushion Lab Grown Diamond

VG • D/VS2 • IGI LG846667434

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG846667434

Diamond specifications and retailer prices

From £172 GBP
€218 EUR
As of October 29, 2026
Save £164 GBP (49%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £670 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 0.4ct lab-grown cushion diamond

This 0.4ct lab-grown cushion sits in the sub-half-carat band, graded D colour (colourless) and VS2 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG846667434 or 846667434. Listed at 5 retailers as of October 29, 2026, with a 95% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.40
Carat
D
Colour
VS2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle31.1°
Pavilion angle35.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846667434
Dimensions5.50 × 3.92 × 2.36 mm
L/W Ratio1.40
Girdle conditionFaceted
Culet sizeNone
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.50 mm3.92 mm0.40 ctD / VS2
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG846667434
Side View
Table 63.0%Crown 31.1°Girdle: THN-MEDPavilion 35.5°Culet: NoneDepth 60.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: £670 GBP|Low: £172 GBP|High: £670 GBP|Avg: £279 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 29, 2026
Retailer 3£172 GBP
Retailer 2£174 GBP
Retailer 4£186 GBP
Retailer 5£336 GBP
MOH London£670 GBP

2 data points across 5 retailers

5 retailers£172 GBP to £336 GBP

A
Cheapest Retailer
-
£172 GBP
€218 EUR
A
Retailer 2
-
£174 GBP
View
B+
Retailer 3
-
£186 GBP
$248 USD
View
B
Retailer 4
-
£336 GBP
$447 USD
View
Most Expensive
MOH London
LG846667434 · Oct 29
£670 GBP
View
Price under review
4 more retailers have this diamond
Prices start from £172 GBPSave up to £164 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.

A
0.40ct Cushion
£172 GBP