CaratHunter
Plans
Cushion|Lab Grown|IGI

4.05ct F VVS2 Cushion Lab Grown Diamond

VG • F/VVS2 • IGI LG843651164

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

Certificate IGI LG843651164

Diamond specifications and retailer prices

From £451 GBP
As of November 1, 2026
Save £3,333 GBP (88%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £3,784 GBP at Brilliant Earth · As of October 31, 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 F colour (colourless) and VVS2 clarity (very-very-slightly-included), with a very-good cut grade and certified by IGI LG843651164 or 843651164. Listed at 16 retailers as of October 31, 2026, with prices from £451 to £3,784, a £3,333 spread on the same certified stone. Brilliant Earth lists it at £3,784. 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
F
Colour
VVS2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.9°
Pavilion angle46°
OriginLab Grown
Grading LabIGI
CertificateIGI LG843651164
Dimensions8.89 × 8.89 × 6.67 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.89 mm8.89 mm4.05 ctF / VVS2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG843651164
Side View
Table 67.0%Crown 42.9°Girdle: MED-VTKPavilion 46°Culet: NoneDepth 75.0%

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: Nov 1
Current: £3,784 GBP|Low: £451 GBP|High: £310,750 GBP|Avg: £29,451 GBP|-36.0%
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
Retailer 14
Retailer 15
Retailer 16
November 1, 2026
Retailer 2£451 GBP
Retailer 7£540 GBP
Retailer 4£638 GBP
Retailer 16£831 GBP
Retailer 9£837 GBP
Retailer 10£859 GBP
Retailer 13£1,075 GBP
Retailer 12£1,082 GBP
Retailer 5£1,259 GBP
Retailer 15£1,717 GBP
Retailer 3£1,721 GBP
Retailer 6£1,749 GBP
Retailer 8£1,873 GBP
Retailer 11£2,311 GBP
Retailer 14£2,349 GBP
Brilliant Earth£3,784 GBP

17 data points across 16 retailers

16 retailers£451 GBP to £3,784 GBP

A
Cheapest Retailer
-
£451 GBP
A
Retailer 2
-
£540 GBP
$723 USD
View
Final sale: no returns
A
Retailer 3
-
£638 GBP
$855 USD
View
B+
Retailer 4
-
£831 GBP
$1,113 USD
View
A
Retailer 5
-
£837 GBP
View
A
Retailer 6
-
£859 GBP
€1,096 EUR
View
A
Retailer 7
-
£1,075 GBP
ZAR 23,280 ZAR
View
A
Retailer 8
-
£1,082 GBP
A$2,231 AUD
View
B+
Retailer 9
-
£1,259 GBP
$1,687 USD
View
B+
Retailer 10
-
£1,717 GBP
$2,301 USD
View
B+
Retailer 11
-
£1,721 GBP
$2,306 USD
View
B+
Retailer 12
-
£1,749 GBP
$2,343 USD
View
B
Retailer 13
-
£1,873 GBP
$2,510 USD
View
B
Retailer 14
-
£2,311 GBP
A$4,763 AUD
View
B
Retailer 15
-
£2,349 GBP
View
Most Expensive
B
Brilliant Earth
22205259A · Oct 31
£3,784 GBP
$5,070 USD
View
15 more retailers have this diamond
Prices start from £451 GBPSave up to £3,333 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
£451 GBP