Radiant|Lab Grown|IGI

20.09ct G VS1 Radiant Lab Grown Diamond

EX • G/VS1 • IGI LG739534203

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG739534203

Diamond specifications and retailer prices

From £5,472 GBP

$7,332 USD

As of November 2, 2026

Save £19,164 GBP (78%) vs most expensive(unlock to see where)

15 retailers carry this diamond

Most expensive: £24,636 GBP at Brilliant Earth · As of October 31, 2026

View at Brilliant Earth

About this 20.09ct lab-grown radiant diamond

This 20.09ct lab-grown radiant sits in the over five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG739534203 or 739534203. Listed at 15 retailers as of October 31, 2026, with prices from £5,472 to £24,636, a £19,164 spread on the same certified stone. Brilliant Earth lists it at £24,636. 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

20.09

Carat

Colour

VS1

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle44°

Pavilion angle35.5°

OriginLab Grown

Grading LabIGI

CertificateIGI LG739534203

Dimensions18.31 × 13.32 × 8.66 mm

L/W Ratio1.37

Culet sizePointed

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

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG739534203

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 2

Current: £24,636 GBP|Low: £5,472 GBP|High: £25,532 GBP|Avg: £10,289 GBP|-3.5%

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

November 2, 2026

Retailer 3£5,472 GBP

Retailer 11£5,692 GBP

Retailer 5£6,162 GBP

Retailer 4£6,310 GBP

Retailer 15£6,348 GBP

Retailer 14£6,534 GBP

Retailer 7£6,965 GBP

Retailer 12£7,177 GBP

Retailer 2£7,353 GBP

Retailer 8£7,751 GBP

Retailer 10£10,352 GBP

Retailer 9£12,098 GBP

Retailer 13£17,989 GBP

Retailer 6£21,326 GBP

Brilliant Earth£24,636 GBP

42 data points across 15 retailers

15 retailers£5,472 GBP to £24,636 GBP

Cheapest Retailer

£5,472 GBP

$7,332 USD

Retailer 2

£5,692 GBP

$7,626 USD

View

B+

Retailer 3

£6,162 GBP

$8,257 USD

View

B+

Retailer 4

£6,310 GBP

$8,455 USD

View

B+

Retailer 5

£6,348 GBP

$8,505 USD

View

B+

Retailer 6

£6,534 GBP

HK$68,400 HKD

View

Retailer 7

£6,965 GBP

$9,332 USD

View

Price last confirmed 20 days ago

B+

Retailer 8

£7,177 GBP

$9,616 USD

View

B+

Retailer 9

£7,353 GBP

$9,852 USD

View

B+

Retailer 10

£7,751 GBP

View

Retailer 11

£10,352 GBP

€13,210 EUR

View

Retailer 12

£12,098 GBP

A$24,939 AUD

View

Retailer 13

£17,989 GBP

$24,103 USD

View

Retailer 14

£21,326 GBP

$28,575 USD

View

Most Expensive

Brilliant Earth

19039056A · Oct 31

£24,636 GBP

$33,010 USD

View

14 more retailers have this diamond

Prices start from £5,472 GBPSave up to £19,164 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.

Similar diamonds

20.09ct Radiant

£5,472 GBP