Round|Lab Grown|IGI

20.09ct G VS1 Round Lab Grown Diamond

EX • G/VS1 • IGI LG793633336

Shape and cutting style on the report: Round brilliant

Certificate IGI LG793633336

Diamond specifications and retailer prices

From £8,476 GBP

As of October 26, 2026

Save £22,057 GBP (72%) vs most expensive(unlock to see where)

14 retailers carry this diamond

Most expensive: £30,533 GBP at Taylor and Hart · As of October 24, 2026

View at Taylor and Hart

About this 20.09ct lab-grown round diamond

This 20.09ct lab-grown round 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 LG793633336 or 793633336. Listed at 14 retailers as of October 24, 2026, with prices from £8,476 to £30,533, a £22,057 spread on the same certified stone. Taylor and Hart lists it at £30,533. 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 angle34.8°

Pavilion angle40.5°

OriginLab Grown

Grading LabIGI

CertificateIGI LG793633336

Dimensions17.59 × 17.46 × 10.50 mm

L/W Ratio1.01

Girdle conditionFaceted

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 LG793633336

Side View

Caratlytics Score

How it works →

B+

Very Good

Strong quality and value balance

Unlock full score analysis

See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 26

Current: £8,476 GBP|Low: £8,463 GBP|High: £31,064 GBP|Avg: £14,201 GBP|-3.4%

Retailer 1

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Retailer 12

Retailer 13

Taylor and Hart

October 26, 2026

Retailer 1£8,476 GBP

Retailer 11£9,087 GBP

Retailer 7£9,450 GBP

Retailer 8£9,568 GBP

Retailer 2£9,878 GBP

Retailer 3£10,540 GBP

Retailer 5£10,787 GBP

Retailer 10£11,184 GBP

Retailer 9£11,240 GBP

Retailer 4£11,445 GBP

Retailer 6£12,253 GBP

Retailer 13£19,899 GBP

Retailer 12£20,370 GBP

Taylor and Hart£30,533 GBP

35 data points across 14 retailers

14 retailers£8,476 GBP to £30,533 GBP

B+

Cheapest Retailer

£8,476 GBP

Retailer 2

£9,087 GBP

$12,175 USD

View

Price last confirmed 8 days ago

B+

Retailer 3

£9,450 GBP

$12,662 USD

View

Price last confirmed 7 days ago

B+

Retailer 4

£9,568 GBP

$12,820 USD

View

B+

Retailer 5

£9,878 GBP

$13,236 USD

View

B+

Retailer 6

£10,540 GBP

$14,123 USD

View

Retailer 7

£10,787 GBP

$14,453 USD

View

Price last confirmed 19 days ago

B+

Retailer 8

£11,184 GBP

$14,985 USD

View

Retailer 9

£11,240 GBP

$15,060 USD

View

Price last confirmed 8 days ago

Retailer 10

£11,445 GBP

$15,335 USD

View

B+

Retailer 11

£12,253 GBP

View

Retailer 12

£19,899 GBP

A$41,020 AUD

View

Price last confirmed 9 days ago

Retailer 13

£20,370 GBP

$27,293 USD

View

Most Expensive

Taylor and Hart

7BH0SDC · Oct 24

£30,533 GBP

$40,911 USD

View

13 more retailers have this diamond

Prices start from £8,476 GBPSave up to £22,057 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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B+

20.09ct Round

£8,476 GBP