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Cushion|Lab Grown|IGI

0.40ct E VS1 Cushion Lab Grown Diamond

VG • E/VS1 • IGI LG846668058

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

Certificate IGI LG846668058

Diamond specifications and retailer prices

From £120 GBP
$160 USD
As of October 30, 2026
Save £529 GBP (82%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £649 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 E colour (colourless) and VS1 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG846668058 or 846668058. Listed at 6 retailers as of October 29, 2026, with prices from £120 to £649, a £529 spread on the same certified stone. MOH London lists it at £649. 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
E
Colour
VS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle33.2°
Pavilion angle37.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846668058
Dimensions4.29 × 4.15 × 2.78 mm
L/W Ratio1.03
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
4.29 mm4.15 mm0.40 ctE / VS1
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG846668058
Side View
Table 63.0%Crown 33.2°Girdle: MED-STKPavilion 37.6°CuletDepth 67.0%

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: Oct 30
Current: £649 GBP|Low: £120 GBP|High: £649 GBP|Avg: £273 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
October 30, 2026
Retailer 2£120 GBP
Retailer 3£167 GBP
Retailer 5£167 GBP
Retailer 4£226 GBP
Retailer 6£327 GBP
MOH London£649 GBP

3 data points across 6 retailers

6 retailers£120 GBP to £649 GBP

A
Cheapest Retailer
-
£120 GBP
$160 USD
A
Retailer 2
-
£167 GBP
View
B+
Retailer 3
-
£167 GBP
€212 EUR
View
B
Retailer 4
-
£226 GBP
View
B
Retailer 5
-
£327 GBP
$436 USD
View
Most Expensive
C
MOH London
LG846668058 · Oct 29
£649 GBP
View
5 more retailers have this diamond
Prices start from £120 GBPSave up to £529 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
£120 GBP