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Cushion|Lab Grown|IGI

4.02ct H VS1 Cushion Lab Grown Diamond

EX • H/VS1 • IGI LG814622911

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG814622911

Diamond specifications and retailer prices

From £360 GBP
$482 USD
As of November 1, 2026
Save £317 GBP (47%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £1,623 GBP at Rare Carat · As of October 14, 2026
View at Rare Carat

About this 4.02ct lab-grown cushion diamond

This 4.02ct lab-grown cushion sits in the three to five carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG814622911 or 814622911. Listed at 3 retailers as of November 1, 2026, with a 88% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

4.02
Carat
H
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.2°
Pavilion angle36.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG814622911
Dimensions11.36 × 8.19 × 5.44 mm
L/W Ratio1.39
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.36 mm8.19 mm4.02 ctH / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG814622911
Side View
Table 60.0%Crown 37.2°Girdle: STK-THKPavilion 36.1°Culet: NoneDepth 66.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: £1,623 GBP|Low: £360 GBP|High: £1,623 GBP|Avg: £949 GBP
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 3£360 GBP
Retailer 6£661 GBP
Retailer 2£677 GBP
Retailer 5£784 GBP
Retailer 4£909 GBP
Retailer 7£1,419 GBP
Rare Carat£1,623 GBP

37 data points across 7 retailers

3 retailers£360 GBP to £677 GBP

A
Cheapest Retailer
-
£360 GBP
$482 USD
Final sale: no returns
A
Retailer 2
-
£677 GBP
View
Most Expensive
Rare Carat
814622911 · Oct 14
£1,623 GBP
$2,175 USD
View
Price last confirmed 18 days ago
2 more retailers have this diamond
Prices start from £360 GBPSave up to £317 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
4.02ct Cushion
£360 GBP