Heart|Lab Grown|IGI

20.42ct F VS2 Heart Lab Grown Diamond

EX • F/VS2 • IGI LG627442949

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG627442949

Diamond specifications and retailer prices

From £9,212 GBP

As of November 2, 2026

Save £2,774 GBP (23%) vs most expensive(unlock to see where)

8 retailers carry this diamond

Most expensive: £11,986 GBP at Friendly Diamonds · As of November 2, 2026

View at Friendly Diamonds

About this 20.42ct lab-grown heart diamond

This 20.42ct lab-grown heart sits in the over five carat band, graded F colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG627442949 or 627442949. Listed at 8 retailers as of November 2, 2026, with prices from £9,212 to £11,986, a £2,774 spread on the same certified stone. Friendly Diamonds lists it at £11,986. 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

20.42

Carat

Colour

VS2

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle35.1°

Pavilion angle38.1°

OriginLab Grown

Grading LabIGI

CertificateIGI LG627442949

Dimensions17.19 × 19.42 × 10.65 mm

L/W Ratio1.13

Girdle conditionFaceted

Culet sizePointed

Cert comments

This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG627442949

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: £11,986 GBP|Low: £9,212 GBP|High: £36,972 GBP|Avg: £15,747 GBP|-10.9%

Friendly Diamonds

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

November 2, 2026

Retailer 2£9,212 GBP

Retailer 5£9,888 GBP

Retailer 7£10,126 GBP

Retailer 9£10,216 GBP

Retailer 6£10,749 GBP

Retailer 8£10,816 GBP

Retailer 4£11,356 GBP

Retailer 10£11,679 GBP

Friendly Diamonds£11,986 GBP

Retailer 3£31,059 GBP

Retailer 11£36,972 GBP

26 data points across 11 retailers

8 retailers£9,212 GBP to £11,986 GBP

B+

Cheapest Retailer

£9,212 GBP

B+

Retailer 2

£9,888 GBP

$13,269 USD

View

B+

Retailer 3

£10,126 GBP

$13,588 USD

View

Retailer 4

£10,216 GBP

$13,709 USD

View

B+

Retailer 5

£10,749 GBP

$14,425 USD

View

B+

Retailer 6

£10,816 GBP

$14,515 USD

View

Retailer 7

£11,356 GBP

$15,239 USD

View

Most Expensive

Friendly Diamonds

1228534 · Nov 2

£11,986 GBP

$16,084 USD

View

7 more retailers have this diamond

Prices start from £9,212 GBPSave up to £2,774 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+

20.42ct Heart

£9,212 GBP