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Cushion|Lab Grown|IGI

4.03ct H VS1 Cushion Lab Grown Diamond

EX • H/VS1 • IGI LG817623323

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG817623323

Diamond specifications and retailer prices

From £360 GBP
$483 USD
As of November 1, 2026
Save £1,714 GBP (83%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £2,075 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 LG817623323 or 817623323. Listed at 4 retailers as of October 31, 2026, with prices from £360 to £2,075, a £1,714 spread on the same certified stone. Brilliant Earth lists it at £2,075. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817623323
Dimensions10.81 × 8.40 × 5.69 mm
L/W Ratio1.29
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.81 mm8.40 mm4.03 ctH / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817623323
Side View
Table 61.0%Crown 36.4°Girdle: MED-STKPavilion 36.4°Culet: NoneDepth 67.7%

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: £2,075 GBP|Low: £360 GBP|High: £2,075 GBP|Avg: £1,143 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 2, 2026
Retailer 3£360 GBP
Retailer 5£663 GBP
Retailer 2£678 GBP
Retailer 6£1,423 GBP
Retailer 4£1,627 GBP
Brilliant Earth£2,075 GBP

38 data points across 6 retailers

4 retailers£360 GBP to £2,075 GBP

A
Cheapest Retailer
-
£360 GBP
$483 USD
Final sale: no returns
A
Retailer 2
-
£678 GBP
View
Retailer 3
-
£1,627 GBP
$2,180 USD
View
Price last confirmed 18 days ago
Most Expensive
B
Brilliant Earth
21246035A · Oct 31
£2,075 GBP
$2,780 USD
View
3 more retailers have this diamond
Prices start from £360 GBPSave up to £1,714 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
£360 GBP