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Cushion|Lab Grown|IGI

4.05ct D VS2 Cushion Lab Grown Diamond

EX • D/VS2 • IGI LG845698639

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG845698639

Diamond specifications and retailer prices

From £660 GBP
As of October 30, 2026
Save £3,386 GBP (84%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £4,046 GBP at Frank Darling · As of October 30, 2026
View at Frank Darling

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 LG845698639 or 845698639. Listed at 5 retailers as of October 30, 2026, with prices from £660 to £4,046, a £3,386 spread on the same certified stone. Frank Darling lists it at £4,046. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle35.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG845698639
Dimensions11.54 × 8.19 × 5.50 mm
L/W Ratio1.41
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.54 mm8.19 mm4.05 ctD / VS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG845698639
Side View
Table 62.0%Crown 35.3°Girdle: THN-STKPavilion 35.8°CuletDepth 67.2%

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: Oct 30
Current: £4,046 GBP|Low: £660 GBP|High: £4,046 GBP|Avg: £2,422 GBP
Frank Darling
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 30, 2026
Retailer 2£660 GBP
Retailer 3£987 GBP
Retailer 5£1,993 GBP
Retailer 4£3,851 GBP
Frank Darling£4,046 GBP

3 data points across 5 retailers

5 retailers£660 GBP to £4,046 GBP

A
Cheapest Retailer
-
£660 GBP
A
Retailer 2
-
£987 GBP
$1,322 USD
View
B
Retailer 3
-
£1,993 GBP
$2,670 USD
View
B
Retailer 4
-
£3,851 GBP
$5,160 USD
View
Most Expensive
B
Frank Darling
LGLCU40-174538UD · Oct 30
£4,046 GBP
$5,421 USD
View
4 more retailers have this diamond
Prices start from £660 GBPSave up to £3,386 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
£660 GBP