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Cushion|Lab Grown|IGI

4.05ct E VS2 Cushion Lab Grown Diamond

ID • E/VS2 • IGI LG837666897

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG837666897

Diamond specifications and retailer prices

From £401 GBP
As of October 30, 2026
Save £1,608 GBP (80%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £2,037 GBP at Rare Carat · As of October 19, 2026
View at Rare Carat

About this 4.05ct lab-grown cushion diamond

This 4.05ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG837666897 or 837666897. Listed at 13 retailers as of October 29, 2026, with a 401% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
E
Colour
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG837666897
Dimensions11.48 × 7.83 × 5.44 mm
L/W Ratio1.47
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.48 mm7.83 mm4.05 ctE / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG837666897
Side View
Table 57.0%Crown 35.6°Girdle: STK-THKPavilion 39.9°Culet: NoneDepth 69.5%

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 30
Current: £2,037 GBP|Low: £401 GBP|High: £2,037 GBP|Avg: £1,229 GBP
Rare Carat
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 7£401 GBP
Retailer 9£431 GBP
Retailer 11£582 GBP
Retailer 4£642 GBP
Retailer 10£734 GBP
Retailer 8£741 GBP
Retailer 3£1,182 GBP
Retailer 13£1,515 GBP
Retailer 5£1,556 GBP
Retailer 6£1,569 GBP
Retailer 2£1,673 GBP
Retailer 12£2,008 GBP
Rare Carat£2,037 GBP

16 data points across 13 retailers

13 retailers£401 GBP to £2,008 GBP

A
Cheapest Retailer
-
£401 GBP
A
Retailer 2
-
£431 GBP
$578 USD
View
Final sale: no returns
A
Retailer 3
-
£582 GBP
$780 USD
View
B+
Retailer 4
-
£642 GBP
$860 USD
View
A
Retailer 5
-
£734 GBP
€937 EUR
View
A
Retailer 6
-
£741 GBP
View
A
Retailer 7
-
£1,182 GBP
$1,584 USD
View
B+
Retailer 8
-
£1,515 GBP
SGD 2,743 SGD
View
B+
Retailer 9
-
£1,556 GBP
$2,085 USD
View
B+
Retailer 10
-
£1,569 GBP
$2,103 USD
View
B+
Retailer 11
-
£1,673 GBP
$2,242 USD
View
B+
Retailer 12
-
£2,008 GBP
View
Most Expensive
Rare Carat
42A837666897 · Oct 19
£2,037 GBP
$2,730 USD
View
Price last confirmed 12 days ago
12 more retailers have this diamond
Prices start from £401 GBPSave up to £1,608 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
£401 GBP