Heart|Lab Grown|IGI

1.09ct E FL Heart Lab Grown Diamond

ID • E/FL • IGI LG816624115

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG816624115

Diamond specifications and retailer prices

From £241 GBP

$323 USD

As of October 30, 2026

Save £1,237 GBP (84%) vs most expensive(unlock to see where)

19 retailers carry this diamond

Most expensive: £1,478 GBP at Brilliant Earth · As of October 30, 2026

View at Brilliant Earth

About this 1.09ct lab-grown heart diamond

This 1.09ct lab-grown heart sits in the classic one-carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG816624115 or 816624115. Listed at 19 retailers as of October 30, 2026, with prices from £241 to £1,478, a £1,237 spread on the same certified stone. Brilliant Earth lists it at £1,478. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.09

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle35.6°

Pavilion angle38.7°

OriginLab Grown

Grading LabIGI

CertificateIGI LG816624115

Dimensions7.04 × 6.46 × 4.07 mm

L/W Ratio1.09

Girdle conditionFaceted

Cert comments

As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG816624115

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 30

Current: £1,478 GBP|Low: £240 GBP|High: £1,724 GBP|Avg: £791 GBP|-14.3%

Brilliant Earth

Retailer 2

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Retailer 14

October 30, 2026

Retailer 3£241 GBP

Retailer 6£374 GBP

Retailer 9£379 GBP

Retailer 7£441 GBP

Retailer 10£461 GBP

Retailer 2£474 GBP

Retailer 13£501 GBP

Retailer 12£526 GBP

Retailer 14£599 GBP

Retailer 4£898 GBP

Retailer 5£1,050 GBP

Retailer 8£1,081 GBP

Retailer 11£1,105 GBP

Brilliant Earth£1,478 GBP

35 data points across 14 retailers

19 retailers£241 GBP to £1,478 GBP

Cheapest Retailer

£241 GBP

$323 USD

Final sale: no returns

Retailer 2

£302 GBP

$404 USD

View

Price last confirmed 22 days ago

Retailer 3

£338 GBP

$453 USD

View

Price last confirmed 31 days ago

Retailer 4

£369 GBP

$495 USD

View

Price last confirmed 35 days ago

Retailer 5

£374 GBP

$501 USD

View

Price last confirmed 18 days ago

Retailer 6

£374 GBP

$501 USD

View

Price last confirmed 27 days ago

Retailer 7

£379 GBP

$508 USD

View

Retailer 8

£441 GBP

€563 EUR

View

B+

Retailer 9

£461 GBP

ZAR 9,974 ZAR

View

B+

Retailer 10

£474 GBP

View

B+

Retailer 11

£501 GBP

$671 USD

View

B+

Retailer 12

£526 GBP

$705 USD

View

B+

Retailer 13

£599 GBP

$803 USD

View

Retailer 14

£898 GBP

$1,204 USD

View

Retailer 15

£1,050 GBP

$1,407 USD

View

Retailer 16

£1,081 GBP

View

Retailer 17

£1,105 GBP

$1,480 USD

View

Retailer 18

£1,203 GBP

$1,612 USD

View

Price last confirmed 29 days ago

Most Expensive

Brilliant Earth

21018290A · Oct 30

£1,478 GBP

$1,980 USD

View

18 more retailers have this diamond

Prices start from £241 GBPSave up to £1,237 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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