Heart|Lab Grown|IGI

20.49ct G VS1 Heart Lab Grown Diamond

EX • G/VS1 • IGI LG704518235

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG704518235

Diamond specifications and retailer prices

From £8,801 GBP

$11,803 USD

As of November 2, 2026

Save £21,012 GBP (70%) vs most expensive(unlock to see where)

14 retailers carry this diamond

Most expensive: £29,814 GBP at Taylor and Hart · As of October 31, 2026

View at Taylor and Hart

About this 20.49ct lab-grown heart diamond

This 20.49ct lab-grown heart 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 LG704518235 or 704518235. Listed at 14 retailers as of October 31, 2026, with prices from £8,801 to £29,814, a £21,012 spread on the same certified stone. Taylor and Hart lists it at £29,814. 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

20.49

Carat

Colour

VS1

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle40.1°

Pavilion angle41.5°

OriginLab Grown

Grading LabIGI

CertificateIGI LG704518235

Dimensions16.39 × 18.30 × 11.23 mm

L/W Ratio1.12

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 LG704518235

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: £19,252 GBP|Low: £8,449 GBP|High: £29,814 GBP|Avg: £13,217 GBP|-0.2%

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

November 1, 2026

Retailer 9£8,801 GBP

Retailer 13£9,153 GBP

Retailer 2£9,303 GBP

Retailer 12£9,568 GBP

Retailer 3£9,857 GBP

Retailer 8£10,067 GBP

Retailer 10£10,210 GBP

Retailer 7£10,832 GBP

Retailer 11£10,888 GBP

Retailer 5£11,822 GBP

Retailer 6£12,310 GBP

Retailer 1£19,252 GBP

Retailer 4£19,774 GBP

Taylor and Hart£29,814 GBP

15 data points across 14 retailers

14 retailers£8,801 GBP to £29,814 GBP

B+

Cheapest Retailer

£8,801 GBP

$11,803 USD

B+

Retailer 2

£9,153 GBP

$12,275 USD

View

B+

Retailer 3

£9,303 GBP

$12,476 USD

View

B+

Retailer 4

£9,568 GBP

$12,832 USD

View

B+

Retailer 5

£9,857 GBP

$13,219 USD

View

Final sale: no returns

B+

Retailer 6

£10,067 GBP

$13,500 USD

View

B+

Retailer 7

£10,210 GBP

$13,692 USD

View

Retailer 8

£10,210 GBP

$13,692 USD

View

Price last confirmed 22 days ago

B+

Retailer 9

£10,832 GBP

$14,527 USD

View

B+

Retailer 10

£10,888 GBP

$14,601 USD

View

Retailer 11

£12,310 GBP

View

Price last confirmed 14 days ago

Retailer 12

£19,252 GBP

A$39,721 AUD

View

Retailer 13

£19,774 GBP

$26,519 USD

View

Most Expensive

Taylor and Hart

B7WPEKO · Oct 31

£29,814 GBP

$39,982 USD

View

13 more retailers have this diamond

Prices start from £8,801 GBPSave up to £21,012 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+

20.49ct Heart

£8,801 GBP