Heart|Lab Grown|IGI

1.18ct E FL Heart Lab Grown Diamond

ID • E/FL • IGI LG830624066

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG830624066

Diamond specifications and retailer prices

From £235 GBP

$313 USD

As of October 27, 2026

Save £1,635 GBP (87%) vs most expensive(unlock to see where)

17 retailers carry this diamond

Most expensive: £1,870 GBP at Brilliant Earth · As of October 28, 2026

View at Brilliant Earth

About this 1.18ct lab-grown heart diamond

This 1.18ct 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 LG830624066 or 830624066. Listed at 17 retailers as of October 27, 2026, with prices from £235 to £1,870, a £1,635 spread on the same certified stone. Brilliant Earth lists it at £1,870. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.18

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle37.8°

Pavilion angle36.8°

OriginLab Grown

Grading LabIGI

CertificateIGI LG830624066

Dimensions7.38 × 6.52 × 4.16 mm

L/W Ratio1.13

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 LG830624066

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: £1,870 GBP|Low: £235 GBP|High: £1,877 GBP|Avg: £771 GBP|-0.4%

Brilliant Earth

Retailer 2

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Retailer 15

October 30, 2026

Retailer 12£235 GBP

Retailer 5£286 GBP

Retailer 3£291 GBP

Retailer 10£409 GBP

Retailer 15£474 GBP

Retailer 8£501 GBP

Retailer 2£519 GBP

Retailer 13£582 GBP

Retailer 11£717 GBP

Retailer 4£937 GBP

Retailer 14£972 GBP

Retailer 7£1,087 GBP

Retailer 9£1,169 GBP

Retailer 6£1,243 GBP

Brilliant Earth£1,870 GBP

41 data points across 15 retailers

17 retailers£235 GBP to £1,870 GBP

Cheapest Retailer

£235 GBP

$313 USD

Retailer 2

£273 GBP

$363 USD

View

Retailer 3

£286 GBP

$381 USD

View

Final sale: no returns

Retailer 4

£291 GBP

$388 USD

View

Retailer 5

£291 GBP

$388 USD

View

Retailer 6

£409 GBP

$545 USD

View

Retailer 7

£474 GBP

$631 USD

View

Retailer 8

£501 GBP

ZAR 10,775 ZAR

View

B+

Retailer 9

£519 GBP

View

B+

Retailer 10

£582 GBP

$775 USD

View

B+

Retailer 11

£717 GBP

$955 USD

View

B+

Retailer 12

£937 GBP

$1,248 USD

View

B+

Retailer 13

£972 GBP

$1,294 USD

View

B+

Retailer 14

£1,087 GBP

SGD 1,957 SGD

View

B+

Retailer 15

£1,169 GBP

View

Retailer 16

£1,243 GBP

$1,655 USD

View

Most Expensive

Brilliant Earth

21433734A · Oct 28

£1,870 GBP

$2,490 USD

View

16 more retailers have this diamond

Prices start from £235 GBPSave up to £1,635 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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