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Cushion|Lab Grown|IGI

4.02ct H VS1 Cushion Lab Grown Diamond

ID • H/VS1 • IGI LG500144726

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG500144726

Diamond specifications and retailer prices

From £3,963 GBP
$5,310 USD
As of October 31, 2026
10 retailers carry this diamond
Most expensive: £27,174 GBP at Cape Diamonds · As of October 29, 2026
View at Cape Diamonds

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 LG500144726 or 500144726. Listed at 10 retailers as of October 31, 2026. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle33.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG500144726
Dimensions9.14 × 8.86 × 5.58 mm
L/W Ratio1.03
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
9.14 mm8.86 mm4.02 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG500144726
Side View
Table 62.0%Crown 33.6°Girdle: STK-VTKPavilion 33.5°Culet: NoneDepth 63.0%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £27,174 GBP|Low: £3,963 GBP|High: £31,827 GBP|Avg: £16,397 GBP|-10.8%
Cape Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 8£3,963 GBP
Retailer 5£8,966 GBP
Retailer 13£11,668 GBP
Retailer 10£12,325 GBP
Retailer 3£12,349 GBP
Retailer 9£12,634 GBP
Retailer 7£12,766 GBP
Retailer 4£13,706 GBP
Retailer 11£18,290 GBP
Retailer 6£20,052 GBP
Cape Diamonds£27,174 GBP
Retailer 2£27,738 GBP
Retailer 12£31,827 GBP

19 data points across 13 retailers

10 retailers

B
Cheapest Retailer
-
£3,963 GBP
$5,310 USD
Retailer 2
-
£11,668 GBP
$15,634 USD
View
Price under review
Retailer 3
-
£12,325 GBP
$16,514 USD
View
Price under review
Final sale: no returns
Retailer 4
-
£12,634 GBP
$16,928 USD
View
Price under review
Retailer 5
-
£20,052 GBP
View
Price under review
Most Expensive
Cape Diamonds
cert_500144726 · Oct 29
£27,174 GBP
ZAR 588,217 ZAR
View
Price under review
5 more retailers have this diamond
Prices start from £3,963 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
4.02ct Cushion
£3,963 GBP