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Cushion|Lab Grown|IGI

4.02ct H VS1 Cushion Lab Grown Diamond

ID • H/VS1 • IGI LG592359592

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG592359592

Diamond specifications and retailer prices

From £455 GBP
$609 USD
As of November 1, 2026
Save £3,464 GBP (88%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £3,918 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

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 LG592359592 or 592359592. Listed at 19 retailers as of October 29, 2026, with prices from £455 to £3,918, a £3,464 spread on the same certified stone. Brilliant Earth lists it at £3,918. 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°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG592359592
Dimensions9.60 × 9.19 × 6.10 mm
L/W Ratio1.04
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
9.60 mm9.19 mm4.02 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG592359592
Side View
Table 62.0%Crown 33°Girdle: THN-MEDPavilion 40.5°Culet: NoneDepth 66.4%

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: Nov 1
Current: £3,918 GBP|Low: £423 GBP|High: £3,918 GBP|Avg: £1,193 GBP|+0.2%
Brilliant Earth
Retailer 2
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Retailer 4
Retailer 5
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Retailer 12
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Retailer 17
Retailer 18
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Retailer 20
November 2, 2026
Retailer 3£455 GBP
Retailer 10£475 GBP
Retailer 9£549 GBP
Retailer 2£555 GBP
Retailer 4£675 GBP
Retailer 17£697 GBP
Retailer 13£795 GBP
Retailer 20£928 GBP
Retailer 18£1,001 GBP
Retailer 15£1,009 GBP
Retailer 12£1,043 GBP
Retailer 14£1,109 GBP
Retailer 11£1,444 GBP
Retailer 6£1,467 GBP
Retailer 8£1,593 GBP
Retailer 5£1,630 GBP
Retailer 7£1,634 GBP
Retailer 16£2,112 GBP
Retailer 19£2,209 GBP
Brilliant Earth£3,918 GBP

39 data points across 20 retailers

19 retailers£455 GBP to £3,918 GBP

A
Cheapest Retailer
-
£455 GBP
$609 USD
Final sale: no returns
Retailer 2
-
£475 GBP
$637 USD
View
Price last confirmed 17 days ago
A
Retailer 3
-
£549 GBP
$735 USD
View
A
Retailer 4
-
£555 GBP
View
B+
Retailer 5
-
£675 GBP
$905 USD
View
A
Retailer 6
-
£697 GBP
HK$7,300 HKD
View
A
Retailer 7
-
£795 GBP
€1,014 EUR
View
A
Retailer 8
-
£928 GBP
$1,243 USD
View
A
Retailer 9
-
£1,001 GBP
ZAR 21,677 ZAR
View
A
Retailer 10
-
£1,009 GBP
A$2,079 AUD
View
A
Retailer 11
-
£1,109 GBP
$1,486 USD
View
B+
Retailer 12
-
£1,467 GBP
View
B+
Retailer 13
-
£1,593 GBP
$2,135 USD
View
B+
Retailer 14
-
£1,630 GBP
$2,184 USD
View
B+
Retailer 15
-
£1,634 GBP
$2,189 USD
View
B+
Retailer 16
-
£1,909 GBP
CA$3,552 CAD
View
B
Retailer 17
-
£2,112 GBP
View
B+
Retailer 18
-
£2,209 GBP
$2,960 USD
View
Most Expensive
B
Brilliant Earth
16058137A · Oct 29
£3,918 GBP
$5,250 USD
View
18 more retailers have this diamond
Prices start from £455 GBPSave up to £3,464 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
£455 GBP