Heart|Lab Grown|IGI

1.07ct E FL Heart Lab Grown Diamond

ID • E/FL • IGI LG818661949

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG818661949

Diamond specifications and retailer prices

From £257 GBP

$342 USD

As of October 30, 2026

Save £894 GBP (78%) vs most expensive(unlock to see where)

18 retailers carry this diamond

Most expensive: £1,190 GBP at NZ Jewellers · As of September 30, 2026

View at NZ Jewellers

About this 1.07ct lab-grown heart diamond

This 1.07ct 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 LG818661949 or 818661949. Listed at 18 retailers as of October 30, 2026, with a 348% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.07

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle34.1°

Pavilion angle39.2°

OriginLab Grown

Grading LabIGI

CertificateIGI LG818661949

Dimensions6.48 × 6.98 × 4.04 mm

L/W Ratio1.08

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 LG818661949

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: £506 GBP|Low: £238 GBP|High: £1,464 GBP|Avg: £742 GBP|-15.0%

Retailer 1

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Retailer 12

Retailer 13

October 30, 2026

Retailer 2£257 GBP

Retailer 5£370 GBP

Retailer 9£402 GBP

Retailer 6£468 GBP

Retailer 8£490 GBP

Retailer 12£493 GBP

Retailer 1£506 GBP

Retailer 11£518 GBP

Retailer 13£641 GBP

Retailer 3£952 GBP

Retailer 4£1,039 GBP

Retailer 7£1,148 GBP

Retailer 10£1,151 GBP

35 data points across 13 retailers

18 retailers£257 GBP to £1,151 GBP

Cheapest Retailer

£257 GBP

$342 USD

Final sale: no returns

Retailer 2

£299 GBP

$398 USD

View

Price last confirmed 22 days ago

Retailer 3

£334 GBP

$445 USD

View

Price last confirmed 31 days ago

Retailer 4

£366 GBP

$487 USD

View

Price last confirmed 35 days ago

Retailer 5

£370 GBP

$493 USD

View

Price last confirmed 27 days ago

Retailer 6

£370 GBP

$493 USD

View

Price last confirmed 18 days ago

Retailer 7

£402 GBP

$535 USD

View

B+

Retailer 8

£468 GBP

€593 EUR

View

B+

Retailer 9

£490 GBP

ZAR 10,538 ZAR

View

B+

Retailer 10

£493 GBP

$657 USD

View

B+

Retailer 11

£506 GBP

View

B+

Retailer 12

£518 GBP

$690 USD

View

B+

Retailer 13

£641 GBP

$853 USD

View

Retailer 14

£952 GBP

$1,267 USD

View

Retailer 15

£1,039 GBP

$1,383 USD

View

Retailer 16

£1,148 GBP

View

Retailer 17

£1,151 GBP

$1,532 USD

View

Most Expensive

NZ Jewellers

662c456a-e8dc-47f6-9f17-c812da81bd98 · Sep 30

£1,190 GBP

$1,585 USD

View

Price last confirmed 29 days ago

17 more retailers have this diamond

Prices start from £257 GBPSave up to £894 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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