Heart|Lab Grown|IGI

21.10ct G VS1 Heart Lab Grown Diamond

ID • G/VS1 • IGI LG782617670

Shape and cutting style on the report: Heart modified brilliant

Certificate IGI LG782617670

Diamond specifications and retailer prices

From £8,188 GBP

$10,981 USD

As of November 2, 2026

Save £20,195 GBP (71%) vs most expensive(unlock to see where)

14 retailers carry this diamond

Most expensive: £28,383 GBP at Taylor and Hart · As of October 31, 2026

View at Taylor and Hart

About this 21.1ct lab-grown heart diamond

This 21.1ct 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 LG782617670 or 782617670. Listed at 14 retailers as of October 31, 2026, with prices from £8,188 to £28,383, a £20,195 spread on the same certified stone. Taylor and Hart lists it at £28,383. 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

21.10

Carat

Colour

VS1

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle33.2°

Pavilion angle30.4°

OriginLab Grown

Grading LabIGI

CertificateIGI LG782617670

Dimensions19.21 × 16.45 × 9.02 mm

L/W Ratio1.17

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 LG782617670

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: £17,935 GBP|Low: £8,188 GBP|High: £31,974 GBP|Avg: £14,042 GBP|-23.6%

Retailer 1

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Retailer 12

Taylor and Hart

November 1, 2026

Retailer 11£8,188 GBP

Retailer 8£8,516 GBP

Retailer 2£8,784 GBP

Retailer 12£8,902 GBP

Retailer 4£9,171 GBP

Retailer 10£9,498 GBP

Retailer 6£9,500 GBP

Retailer 3£10,134 GBP

Retailer 7£10,236 GBP

Retailer 5£11,219 GBP

Retailer 1£17,935 GBP

Retailer 9£20,580 GBP

Taylor and Hart£28,383 GBP

19 data points across 13 retailers

14 retailers£8,188 GBP to £28,383 GBP

Cheapest Retailer

£8,188 GBP

$10,981 USD

B+

Retailer 2

£8,516 GBP

$11,421 USD

View

B+

Retailer 3

£8,784 GBP

$11,780 USD

View

B+

Retailer 4

£8,902 GBP

$11,938 USD

View

B+

Retailer 5

£9,171 GBP

$12,299 USD

View

Final sale: no returns

B+

Retailer 6

£9,498 GBP

$12,738 USD

View

Retailer 7

£9,498 GBP

$12,738 USD

View

Price last confirmed 22 days ago

B+

Retailer 8

£9,500 GBP

$12,740 USD

View

B+

Retailer 9

£10,134 GBP

$13,590 USD

View

B+

Retailer 10

£10,236 GBP

$13,727 USD

View

B+

Retailer 11

£11,219 GBP

View

Retailer 12

£17,935 GBP

A$37,004 AUD

View

Retailer 13

£20,580 GBP

$27,599 USD

View

Most Expensive

Taylor and Hart

632FEXV · Oct 31

£28,383 GBP

$38,064 USD

View

13 more retailers have this diamond

Prices start from £8,188 GBPSave up to £20,195 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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21.10ct Heart

£8,188 GBP