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Cushion|Lab Grown|IGI

4.02ct H VS1 Cushion Lab Grown Diamond

ID • H/VS1 • IGI LG593391838

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG593391838

Diamond specifications and retailer prices

From £592 GBP
HK$6,200 HKD
As of November 1, 2026
Save £3,318 GBP (85%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £3,911 GBP at Brilliant Earth · As of October 31, 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 LG593391838 or 593391838. Listed at 13 retailers as of October 31, 2026, with prices from £592 to £3,911, a £3,318 spread on the same certified stone. Brilliant Earth lists it at £3,911. 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 angle32.3°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG593391838
Dimensions9.57 × 9.18 × 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
9.57 mm9.18 mm4.02 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG593391838
Side View
Table 61.0%Crown 32.3°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 66.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £3,911 GBP|Low: £402 GBP|High: £4,045 GBP|Avg: £1,311 GBP|-3.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 1, 2026
Retailer 8£402 GBP
Retailer 4£592 GBP
Retailer 9£597 GBP
Retailer 16£638 GBP
Retailer 11£775 GBP
Retailer 12£832 GBP
Retailer 6£900 GBP
Retailer 14£938 GBP
Retailer 5£1,078 GBP
Retailer 13£1,085 GBP
Retailer 10£1,109 GBP
Retailer 7£1,683 GBP
Retailer 3£1,710 GBP
Retailer 15£1,753 GBP
Retailer 2£2,352 GBP
Brilliant Earth£3,911 GBP

6 data points across 16 retailers

13 retailers£592 GBP to £3,911 GBP

A
Cheapest Retailer
-
£592 GBP
HK$6,200 HKD
A
Retailer 2
-
£597 GBP
View
A
Retailer 3
-
£638 GBP
$855 USD
View
A
Retailer 4
-
£775 GBP
$1,038 USD
View
B+
Retailer 5
-
£832 GBP
$1,115 USD
View
A
Retailer 6
-
£938 GBP
$1,257 USD
View
A
Retailer 7
-
£1,078 GBP
ZAR 23,343 ZAR
View
A
Retailer 8
-
£1,085 GBP
A$2,237 AUD
View
A
Retailer 9
-
£1,109 GBP
$1,486 USD
View
B+
Retailer 10
-
£1,710 GBP
SGD 3,096 SGD
View
B+
Retailer 11
-
£1,753 GBP
$2,349 USD
View
B+
Retailer 12
-
£2,352 GBP
View
Most Expensive
B
Brilliant Earth
17656189A · Oct 31
£3,911 GBP
$5,240 USD
View
12 more retailers have this diamond
Prices start from £592 GBPSave up to £3,318 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
£592 GBP