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Cushion|Lab Grown|IGI

4.01ct H VS2 Cushion Lab Grown Diamond

EX • H/VS2 • IGI LG818627939

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG818627939

Diamond specifications and retailer prices

From £344 GBP
$461 USD
As of October 31, 2026
Save £1,664 GBP (83%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £2,008 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 4.01ct lab-grown cushion diamond

This 4.01ct lab-grown cushion sits in the three to five carat band, graded H colour (near-colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG818627939 or 818627939. Listed at 3 retailers as of October 29, 2026, with prices from £344 to £2,008, a £1,664 spread on the same certified stone. Brilliant Earth lists it at £2,008. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.01
Carat
H
Colour
VS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle35.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818627939
Dimensions11.21 × 8.23 × 5.50 mm
L/W Ratio1.36
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.21 mm8.23 mm4.01 ctH / VS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818627939
Side View
Table 61.0%Crown 36.4°Girdle: MED-THKPavilion 35.7°Culet: NoneDepth 66.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 31
Current: £2,008 GBP|Low: £344 GBP|High: £2,008 GBP|Avg: £1,060 GBP
Brilliant Earth
Retailer 2
Retailer 3
October 31, 2026
Retailer 3£344 GBP
Retailer 2£656 GBP
Brilliant Earth£2,008 GBP

37 data points across 3 retailers

3 retailers£344 GBP to £2,008 GBP

A
Cheapest Retailer
-
£344 GBP
$461 USD
Final sale: no returns
A
Retailer 2
-
£656 GBP
View
Most Expensive
B
Brilliant Earth
21228173A · Oct 29
£2,008 GBP
$2,690 USD
View
2 more retailers have this diamond
Prices start from £344 GBPSave up to £1,664 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
4.01ct Cushion
£344 GBP