Heart|Lab Grown|IGI

12.56ct E VS1 Heart Lab Grown Diamond

ID • E/VS1 • IGI LG813643585

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG813643585

Diamond specifications and retailer prices

From £2,682 GBP

$3,594 USD

As of October 27, 2026

Save £8,285 GBP (76%) vs most expensive(unlock to see where)

16 retailers carry this diamond

Most expensive: £10,968 GBP at Taylor and Hart · As of October 31, 2026

View at Taylor and Hart

About this 12.56ct lab-grown heart diamond

This 12.56ct lab-grown heart sits in the over five carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG813643585 or 813643585. Listed at 16 retailers as of October 27, 2026, with prices from £2,682 to £10,968, a £8,285 spread on the same certified stone. Taylor and Hart lists it at £10,968. 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

12.56

Carat

Colour

VS1

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle39.6°

Pavilion angle35.3°

OriginLab Grown

Grading LabIGI

CertificateIGI LG813643585

Dimensions16.63 × 14.58 × 8.49 mm

L/W Ratio1.14

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 LG813643585

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: Oct 27

Current: £4,816 GBP|Low: £2,039 GBP|High: £10,968 GBP|Avg: £5,532 GBP|+7.7%

Retailer 1

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Taylor and Hart

October 29, 2026

Retailer 2£3,004 GBP

Retailer 4£3,112 GBP

Retailer 10£3,336 GBP

Retailer 3£4,166 GBP

Retailer 7£4,208 GBP

Retailer 5£4,489 GBP

Retailer 1£4,816 GBP

Retailer 6£5,832 GBP

Retailer 8£7,822 GBP

Retailer 9£8,345 GBP

Taylor and Hart£10,968 GBP

37 data points across 11 retailers

16 retailers£2,682 GBP to £10,968 GBP

Cheapest Retailer

£2,682 GBP

$3,594 USD

Retailer 2

£2,919 GBP

$3,911 USD

View

Retailer 3

£3,004 GBP

$4,025 USD

View

Final sale: no returns

Retailer 4

£3,111 GBP

$4,169 USD

View

Price last confirmed 19 days ago

Retailer 5

£3,111 GBP

$4,169 USD

View

Retailer 6

£3,112 GBP

$4,170 USD

View

Retailer 7

£3,336 GBP

$4,470 USD

View

B+

Retailer 8

£3,888 GBP

$5,210 USD

View

B+

Retailer 9

£4,166 GBP

View

B+

Retailer 10

£4,208 GBP

$5,638 USD

View

B+

Retailer 11

£4,489 GBP

$6,015 USD

View

B+

Retailer 12

£4,816 GBP

ZAR 104,253 ZAR

View

Retailer 13

£5,832 GBP

A$12,021 AUD

View

Price last confirmed 9 days ago

Retailer 14

£7,822 GBP

$10,480 USD

View

Retailer 15

£8,345 GBP

$11,182 USD

View

Most Expensive

Taylor and Hart

97C2D4F · Oct 31

£10,968 GBP

$14,695 USD

View

15 more retailers have this diamond

Prices start from £2,682 GBPSave up to £8,285 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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12.56ct Heart

£2,682 GBP