CaratHunter
Plans
Cushion|Lab Grown|IGI

4.05ct D VS2 Cushion Lab Grown Diamond

EX • D/VS2 • IGI LG779602362

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG779602362

Diamond specifications and retailer prices

From £702 GBP
$940 USD
As of October 29, 2026
Save £4,388 GBP (86%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £5,090 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

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 LG779602362 or 779602362. Listed at 13 retailers as of October 29, 2026, with prices from £702 to £5,090, a £4,388 spread on the same certified stone. Brilliant Earth lists it at £5,090. 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 angle35.6°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG779602362
Dimensions9.37 × 9.23 × 6.12 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.37 mm9.23 mm4.05 ctD / VS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG779602362
Side View
Table 62.0%Crown 35.6°Girdle: THN-MEDPavilion 39.2°Culet: NoneDepth 66.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £5,090 GBP|Low: £564 GBP|High: £5,948 GBP|Avg: £1,765 GBP|-14.4%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 9£564 GBP
Retailer 10£702 GBP
Retailer 13£883 GBP
Retailer 2£910 GBP
Retailer 12£928 GBP
Retailer 6£955 GBP
Retailer 4£1,423 GBP
Retailer 3£1,774 GBP
Retailer 11£1,942 GBP
Retailer 5£1,964 GBP
Retailer 8£2,317 GBP
Retailer 7£2,402 GBP
Brilliant Earth£5,090 GBP

39 data points across 13 retailers

13 retailers£702 GBP to £5,090 GBP

Retailer 1
-
£564 GBP
Price last confirmed 14 days ago
A
Retailer 2
-
£702 GBP
$940 USD
View
A
Retailer 3
-
£883 GBP
$1,183 USD
View
A
Retailer 4
-
£910 GBP
View
A
Retailer 5
-
£928 GBP
$1,244 USD
View
A
Retailer 6
-
£955 GBP
€1,219 EUR
View
A
Retailer 7
-
£1,423 GBP
$1,906 USD
View
B+
Retailer 8
-
£1,774 GBP
View
B+
Retailer 9
-
£1,942 GBP
$2,602 USD
View
Retailer 10
-
£1,964 GBP
$2,632 USD
View
Price last confirmed 12 days ago
Retailer 11
-
£2,317 GBP
$3,105 USD
View
Price last confirmed 11 days ago
B+
Retailer 12
-
£2,402 GBP
View
Most Expensive
B
Brilliant Earth
17884919A · Oct 29
£5,090 GBP
$6,820 USD
View
12 more retailers have this diamond
Prices start from £702 GBPSave up to £4,388 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
£702 GBP