Cushion|Lab Grown|IGI

4.09ct F VS1 Cushion Lab Grown Diamond

ID • F/VS1 • IGI LG835610851

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG835610851

Diamond specifications and retailer prices

From £419 GBP

As of October 27, 2026

Save £2,805 GBP (87%) vs most expensive(unlock to see where)

21 retailers carry this diamond

Most expensive: £3,224 GBP at Brilliant Earth · As of October 28, 2026

View at Brilliant Earth

About this 4.09ct lab-grown cushion diamond

This 4.09ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG835610851 or 835610851. Listed at 21 retailers as of October 27, 2026, with prices from £419 to £3,224, a £2,805 spread on the same certified stone. Brilliant Earth lists it at £3,224. 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

4.09

Carat

Colour

VS1

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle34.9°

Pavilion angle33°

OriginLab Grown

Grading LabIGI

CertificateIGI LG835610851

Dimensions10.69 × 8.23 × 5.40 mm

L/W Ratio1.30

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 LG835610851

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: Oct 27

Current: £3,224 GBP|Low: £417 GBP|High: £4,665 GBP|Avg: £1,421 GBP|-30.9%

Brilliant Earth

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October 28, 2026

Retailer 17£419 GBP

Retailer 7£452 GBP

Retailer 3£545 GBP

Retailer 15£601 GBP

Retailer 16£727 GBP

Retailer 8£740 GBP

Retailer 9£772 GBP

Retailer 18£774 GBP

Retailer 21£986 GBP

Retailer 20£1,010 GBP

Retailer 6£1,119 GBP

Retailer 4£1,186 GBP

Retailer 13£1,562 GBP

Retailer 5£1,611 GBP

Retailer 10£1,622 GBP

Retailer 11£1,624 GBP

Retailer 19£2,090 GBP

Retailer 2£2,169 GBP

Retailer 14£2,268 GBP

Retailer 12£2,299 GBP

Brilliant Earth£3,224 GBP

25 data points across 21 retailers

21 retailers£419 GBP to £3,224 GBP

Cheapest Retailer

£419 GBP

Retailer 2

£545 GBP

HK$5,700 HKD

View

Retailer 3

£601 GBP

$805 USD

View

Retailer 4

£727 GBP

€928 EUR

View

Retailer 5

£740 GBP

$991 USD

View

B+

Retailer 6

£772 GBP

$1,035 USD

View

Retailer 7

£774 GBP

View

Retailer 8

£986 GBP

ZAR 21,352 ZAR

View

Price last confirmed 9 days ago

Retailer 9

£1,010 GBP

A$2,082 AUD

View

Price last confirmed 8 days ago

Retailer 10

£1,119 GBP

$1,500 USD

View

Retailer 11

£1,186 GBP

$1,589 USD

View

B+

Retailer 12

£1,562 GBP

SGD 2,829 SGD

View

Retailer 13

£1,592 GBP

View

Price last confirmed 24 days ago

B+

Retailer 14

£1,611 GBP

$2,158 USD

View

Retailer 15

£1,622 GBP

$2,174 USD

View

Price last confirmed 8 days ago

B+

Retailer 16

£1,624 GBP

$2,176 USD

View

Retailer 17

£2,090 GBP

View

Price last confirmed 7 days ago

B+

Retailer 18

£2,169 GBP

$2,906 USD

View

Retailer 19

£2,268 GBP

A$4,675 AUD

View

Price last confirmed 25 days ago

Retailer 20

£2,299 GBP

$3,080 USD

View

Price last confirmed 18 days ago

Most Expensive

Brilliant Earth

21461864A · Oct 28

£3,224 GBP

$4,320 USD

View

20 more retailers have this diamond

Prices start from £419 GBPSave up to £2,805 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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