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Cushion|Lab Grown|IGI

4.03ct H VS1 Cushion Lab Grown Diamond

ID • H/VS1 • IGI LG598372126

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG598372126

Diamond specifications and retailer prices

From £592 GBP
HK$6,200 HKD
As of November 1, 2026
Save £3,333 GBP (85%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £3,926 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 4.03ct lab-grown cushion diamond

This 4.03ct 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 LG598372126 or 598372126. Listed at 14 retailers as of October 31, 2026, with prices from £592 to £3,926, a £3,333 spread on the same certified stone. Brilliant Earth lists it at £3,926. 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

4.03
Carat
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.4°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG598372126
Dimensions9.76 × 9.01 × 6.08 mm
L/W Ratio1.08
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
9.76 mm9.01 mm4.03 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG598372126
Side View
Table 61.0%Crown 32.4°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 67.5%

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: £3,926 GBP|Low: £424 GBP|High: £4,045 GBP|Avg: £1,309 GBP|-3.0%
Brilliant Earth
Retailer 2
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November 1, 2026
Retailer 9£424 GBP
Retailer 7£471 GBP
Retailer 3£592 GBP
Retailer 13£598 GBP
Retailer 20£642 GBP
Retailer 5£750 GBP
Retailer 16£834 GBP
Retailer 18£942 GBP
Retailer 11£1,045 GBP
Retailer 4£1,081 GBP
Retailer 17£1,088 GBP
Retailer 15£1,111 GBP
Retailer 10£1,376 GBP
Retailer 6£1,511 GBP
Retailer 12£1,550 GBP
Retailer 8£1,620 GBP
Retailer 21£1,714 GBP
Retailer 19£1,757 GBP
Retailer 14£1,913 GBP
Retailer 2£2,357 GBP
Brilliant Earth£3,926 GBP

20 data points across 21 retailers

14 retailers£592 GBP to £3,926 GBP

A
Cheapest Retailer
-
£592 GBP
HK$6,200 HKD
A
Retailer 2
-
£598 GBP
View
A
Retailer 3
-
£642 GBP
$860 USD
View
B+
Retailer 4
-
£834 GBP
$1,117 USD
View
A
Retailer 5
-
£942 GBP
$1,262 USD
View
A
Retailer 6
-
£1,081 GBP
ZAR 23,398 ZAR
View
A
Retailer 7
-
£1,088 GBP
A$2,242 AUD
View
A
Retailer 8
-
£1,111 GBP
$1,489 USD
View
B+
Retailer 9
-
£1,511 GBP
$2,024 USD
View
Retailer 10
-
£1,620 GBP
$2,170 USD
View
Price last confirmed 34 days ago
B+
Retailer 11
-
£1,714 GBP
SGD 3,104 SGD
View
B+
Retailer 12
-
£1,757 GBP
$2,355 USD
View
B+
Retailer 13
-
£2,357 GBP
View
Most Expensive
B
Brilliant Earth
22350162A · Oct 31
£3,926 GBP
$5,260 USD
View
13 more retailers have this diamond
Prices start from £592 GBPSave up to £3,333 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
4.03ct Cushion
£592 GBP