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Cushion|Lab Grown|IGI

4.07ct H VS1 Cushion Lab Grown Diamond

EX • H/VS1 • IGI LG815608377

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG815608377

Diamond specifications and retailer prices

From £363 GBP
$487 USD
As of November 1, 2026
Save £1,734 GBP (83%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £2,097 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 4.07ct lab-grown cushion diamond

This 4.07ct 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 LG815608377 or 815608377. Listed at 4 retailers as of October 31, 2026, with prices from £363 to £2,097, a £1,734 spread on the same certified stone. Brilliant Earth lists it at £2,097. 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

4.07
Carat
H
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.9°
Pavilion angle38°
OriginLab Grown
Grading LabIGI
CertificateIGI LG815608377
Dimensions11.28 × 8.28 × 5.56 mm
L/W Ratio1.36
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.28 mm8.28 mm4.07 ctH / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG815608377
Side View
Table 62.0%Crown 36.9°Girdle: MED-THKPavilion 38°Culet: NoneDepth 67.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: £2,097 GBP|Low: £363 GBP|High: £2,172 GBP|Avg: £1,100 GBP|-3.4%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 3£363 GBP
Retailer 6£644 GBP
Retailer 2£685 GBP
Retailer 5£791 GBP
Retailer 7£927 GBP
Retailer 8£1,402 GBP
Retailer 4£1,646 GBP
Brilliant Earth£2,097 GBP

37 data points across 8 retailers

4 retailers£363 GBP to £2,097 GBP

A
Cheapest Retailer
-
£363 GBP
$487 USD
Final sale: no returns
A
Retailer 2
-
£685 GBP
View
Retailer 3
-
£1,646 GBP
$2,205 USD
View
Price last confirmed 22 days ago
Most Expensive
B+
Brilliant Earth
21223227A · Oct 31
£2,097 GBP
$2,810 USD
View
3 more retailers have this diamond
Prices start from £363 GBPSave up to £1,734 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
4.07ct Cushion
£363 GBP