Cushion|Lab Grown|IGI

4.05ct E VS2 Cushion Lab Grown Diamond

VG • E/VS2 • IGI LG817680764

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG817680764

Diamond specifications and retailer prices

From £448 GBP
As of October 30, 2026
Save £1,887 GBP (81%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £5,269 GBP at Brilliant Earth · As of October 17, 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 E colour (colourless) and VS2 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG817680764 or 817680764. Listed at 15 retailers as of October 29, 2026, with a 421% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

4.05
Carat
E
Colour
VS2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG817680764
Dimensions10.30 × 8.39 × 5.80 mm
L/W Ratio1.23
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.30 mm8.39 mm4.05 ctE / VS2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG817680764
Side View
Table 61.0%Crown 33.7°Girdle: MED-THKPavilion 41.1°Culet: NoneDepth 69.1%

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: £5,269 GBP|Low: £345 GBP|High: £5,269 GBP|Avg: £1,433 GBP
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 2£448 GBP
Retailer 4£484 GBP
Retailer 12£535 GBP
Retailer 9£634 GBP
Retailer 11£716 GBP
Retailer 7£808 GBP
Retailer 6£836 GBP
Retailer 5£1,558 GBP
Retailer 13£1,708 GBP
Retailer 3£1,723 GBP
Retailer 10£2,146 GBP
Retailer 8£2,335 GBP
Brilliant Earth£5,269 GBP

41 data points across 13 retailers

15 retailers£448 GBP to £2,335 GBP

A
Cheapest Retailer
-
£448 GBP
A
Retailer 2
-
£484 GBP
$648 USD
View
Final sale: no returns
Retailer 3
-
£535 GBP
$717 USD
View
Price last confirmed 14 days ago
A
Retailer 4
-
£634 GBP
$850 USD
View
B+
Retailer 5
-
£716 GBP
$960 USD
View
A
Retailer 6
-
£808 GBP
€1,031 EUR
View
A
Retailer 7
-
£836 GBP
View
B+
Retailer 8
-
£1,198 GBP
$1,605 USD
View
B+
Retailer 9
-
£1,558 GBP
View
B+
Retailer 10
-
£1,708 GBP
$2,289 USD
View
B+
Retailer 11
-
£1,723 GBP
$2,308 USD
View
B+
Retailer 12
-
£1,733 GBP
$2,322 USD
View
Retailer 13
-
£2,146 GBP
$2,875 USD
View
Price last confirmed 12 days ago
B
Retailer 14
-
£2,335 GBP
View
Most Expensive
Brilliant Earth
20907135A · Oct 17
£5,269 GBP
$7,060 USD
View
Price last confirmed 13 days ago
14 more retailers have this diamond
Prices start from £448 GBPSave up to £1,887 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
£448 GBP