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Cushion|Lab Grown|IGI

4.05ct D VS2 Cushion Lab Grown Diamond

ID • D/VS2 • IGI LG813651392

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG813651392

Diamond specifications and retailer prices

From £565 GBP
$757 USD
As of October 29, 2026
Save £1,266 GBP (69%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £1,831 GBP at Brilliance · As of October 24, 2026
View at Brilliance

About this 4.05ct lab-grown cushion diamond

This 4.05ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG813651392 or 813651392. Listed at 3 retailers as of October 24, 2026, with prices from £565 to £1,831, a £1,266 spread on the same certified stone. Brilliance lists it at £1,831. 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

4.05
Carat
D
Colour
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG813651392
Dimensions11.06 × 8.36 × 5.61 mm
L/W Ratio1.32
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.06 mm8.36 mm4.05 ctD / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG813651392
Side View
Table 62.0%Crown 36.2°Girdle: MED-STKPavilion 36.4°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: Oct 29
Current: £1,831 GBP|Low: £565 GBP|High: £1,879 GBP|Avg: £1,163 GBP|-2.5%
Brilliance
Retailer 2
Retailer 3
October 28, 2026
Retailer 2£565 GBP
Retailer 3£777 GBP
Brilliance£1,831 GBP

7 data points across 3 retailers

3 retailers£565 GBP to £1,831 GBP

A
Cheapest Retailer
-
£565 GBP
$757 USD
Final sale: no returns
B+
Retailer 2
-
£777 GBP
$1,041 USD
View
Most Expensive
B+
Brilliance
D43359421 · Oct 24
£1,831 GBP
$2,453 USD
View
2 more retailers have this diamond
Prices start from £565 GBPSave up to £1,266 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
4.05ct Cushion
£565 GBP