Radiant|Lab Grown|IGI

12.09ct F VS1 Radiant Lab Grown Diamond

ID • F/VS1 • IGI LG791645523

Shape and cutting style on the report: Cut cornered rectangular mixed cut

Certificate IGI LG791645523

Diamond specifications and retailer prices

From £3,685 GBP

$4,945 USD

As of November 2, 2026

Save £9,430 GBP (72%) vs most expensive(unlock to see where)

16 retailers carry this diamond

Most expensive: £13,115 GBP at Taylor and Hart · As of October 31, 2026

View at Taylor and Hart

About this 12.09ct lab-grown radiant diamond

This 12.09ct lab-grown radiant sits in the over five carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG791645523 or 791645523. Listed at 16 retailers as of October 31, 2026, with prices from £3,685 to £13,115, a £9,430 spread on the same certified stone. Taylor and Hart lists it at £13,115. 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

12.09

Carat

Colour

VS1

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle45°

Pavilion angle45°

OriginLab Grown

Grading LabIGI

CertificateIGI LG791645523

Dimensions14.86 × 10.45 × 7.38 mm

L/W Ratio1.42

Culet sizeLarge

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 LG791645523

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: Nov 2

Current: £4,729 GBP|Low: £3,048 GBP|High: £13,115 GBP|Avg: £5,663 GBP|-44.4%

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

Retailer 14

Retailer 15

Taylor and Hart

November 2, 2026

Retailer 15£3,175 GBP

Retailer 13£3,327 GBP

Retailer 2£3,683 GBP

Retailer 4£3,683 GBP

Retailer 10£3,685 GBP

Retailer 3£3,719 GBP

Retailer 7£4,602 GBP

Retailer 1£4,729 GBP

Retailer 12£4,792 GBP

Retailer 6£5,179 GBP

Retailer 11£5,358 GBP

Retailer 9£5,701 GBP

Retailer 14£6,880 GBP

Retailer 8£6,949 GBP

Retailer 5£7,532 GBP

Taylor and Hart£13,115 GBP

42 data points across 16 retailers

16 retailers£3,685 GBP to £13,115 GBP

Retailer 1

£3,175 GBP

$4,261 USD

Price last confirmed 10 days ago

Retailer 2

£3,327 GBP

$4,465 USD

View

Price last confirmed 12 days ago

Retailer 3

£3,683 GBP

$4,942 USD

View

Price last confirmed 11 days ago

Retailer 4

£3,683 GBP

$4,942 USD

View

Price last confirmed 20 days ago

B+

Retailer 5

£3,685 GBP

$4,945 USD

View

B+

Retailer 6

£3,719 GBP

$4,991 USD

View

Retailer 7

£4,602 GBP

$6,176 USD

View

Price last confirmed 11 days ago

B+

Retailer 8

£4,729 GBP

View

B+

Retailer 9

£4,792 GBP

$6,431 USD

View

B+

Retailer 10

£5,179 GBP

View

B+

Retailer 11

£5,358 GBP

$7,190 USD

View

B+

Retailer 12

£5,701 GBP

ZAR 123,583 ZAR

View

Retailer 13

£6,880 GBP

$9,233 USD

View

Retailer 14

£6,949 GBP

A$14,346 AUD

View

Retailer 15

£7,532 GBP

$10,107 USD

View

Most Expensive

Taylor and Hart

76QT5S6 · Oct 31

£13,115 GBP

$17,599 USD

View

15 more retailers have this diamond

Prices start from £3,685 GBPSave up to £9,430 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

B+

12.09ct Radiant

£3,685 GBP