Cushion|Lab Grown|IGI

4.05ct F VVS2 Cushion Lab Grown Diamond

ID • F/VVS2 • IGI LG845662709

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

Certificate IGI LG845662709

Diamond specifications and retailer prices

From £451 GBP

As of November 1, 2026

Save £5,280 GBP (92%) vs most expensive(unlock to see where)

18 retailers carry this diamond

Most expensive: £5,731 GBP at Cape Diamonds · As of October 29, 2026

View at Cape Diamonds

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 top-tier cut grade and certified by IGI LG845662709 or 845662709. Listed at 18 retailers as of October 29, 2026, with prices from £451 to £5,731, a £5,280 spread on the same certified stone. Cape Diamonds lists it at £5,731. 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

Colour

VVS2

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle41.6°

Pavilion angle39.7°

OriginLab Grown

Grading LabIGI

CertificateIGI LG845662709

Dimensions9.04 × 9.01 × 6.21 mm

L/W Ratio1.00

Girdle conditionFaceted

Cert comments

This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG845662709

Side View

Caratlytics Score

How it works →

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: £5,731 GBP|Low: £451 GBP|High: £519,153 GBP|Avg: £88,095 GBP

Cape Diamonds

Retailer 2

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November 2, 2026

Retailer 12£451 GBP

Retailer 14£540 GBP

Retailer 16£638 GBP

Retailer 3£774 GBP

Retailer 6£831 GBP

Retailer 13£843 GBP

Retailer 2£844 GBP

Retailer 7£1,082 GBP

Retailer 18£1,259 GBP

Retailer 5£1,717 GBP

Retailer 8£1,721 GBP

Retailer 10£1,749 GBP

Retailer 9£1,873 GBP

Retailer 15£2,311 GBP

Retailer 11£2,345 GBP

Retailer 4£3,135 GBP

Retailer 17£4,138 GBP

Cape Diamonds£5,731 GBP

10 data points across 18 retailers

18 retailers£451 GBP to £5,731 GBP

Cheapest Retailer

£451 GBP

Retailer 2

£540 GBP

$723 USD

View

Final sale: no returns

Retailer 3

£638 GBP

$855 USD

View

Retailer 4

£774 GBP

$1,037 USD

View

B+

Retailer 5

£831 GBP

$1,113 USD

View

Retailer 6

£843 GBP

€1,076 EUR

View

Retailer 7

£844 GBP

View

Retailer 8

£1,082 GBP

A$2,231 AUD

View

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

£2,345 GBP

View

Retailer 16

£3,135 GBP

$4,200 USD

View

Retailer 17

£4,138 GBP

$5,544 USD

View

Most Expensive

Cape Diamonds

cert_845662709 · Oct 29

£5,731 GBP

ZAR 124,051 ZAR

View

17 more retailers have this diamond

Prices start from £451 GBPSave up to £5,280 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.

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4.05ct Cushion

£451 GBP