Heart|Lab Grown|IGI

2.18ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG840632409

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG840632409

Diamond specifications and retailer prices

From £831 GBP

$1,114 USD

As of October 30, 2026

Save £3,497 GBP (81%) vs most expensive(unlock to see where)

20 retailers carry this diamond

Most expensive: £4,329 GBP at Brilliant Earth · As of October 30, 2026

View at Brilliant Earth

About this 2.18ct lab-grown heart diamond

This 2.18ct lab-grown heart sits in the two to three carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG840632409 or 840632409. Listed at 20 retailers as of October 30, 2026, with prices from £831 to £4,329, a £3,497 spread on the same certified stone. Brilliant Earth lists it at £4,329. 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

2.18

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle38.4°

Pavilion angle38.7°

OriginLab Grown

Grading LabIGI

CertificateIGI LG840632409

Dimensions7.95 × 8.59 × 5.30 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 LG840632409

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: £4,329 GBP|Low: £831 GBP|High: £5,553 GBP|Avg: £2,196 GBP|-22.0%

Brilliant Earth

Retailer 2

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October 31, 2026

Retailer 10£831 GBP

Retailer 5£905 GBP

Retailer 7£955 GBP

Retailer 19£964 GBP

Retailer 15£1,064 GBP

Retailer 18£1,093 GBP

Retailer 9£1,129 GBP

Retailer 2£1,386 GBP

Retailer 11£1,534 GBP

Retailer 4£1,587 GBP

Retailer 17£1,616 GBP

Retailer 13£1,784 GBP

Retailer 20£1,808 GBP

Retailer 16£2,488 GBP

Retailer 14£2,785 GBP

Retailer 3£3,102 GBP

Retailer 6£3,372 GBP

Retailer 12£3,373 GBP

Retailer 8£3,647 GBP

Brilliant Earth£4,329 GBP

18 data points across 20 retailers

20 retailers£831 GBP to £4,329 GBP

Cheapest Retailer

£831 GBP

$1,114 USD

Retailer 2

£905 GBP

$1,212 USD

View

Retailer 3

£955 GBP

$1,279 USD

View

Final sale: no returns

Retailer 4

£964 GBP

$1,292 USD

View

Retailer 5

£1,064 GBP

View

Retailer 6

£1,093 GBP

$1,465 USD

View

Retailer 7

£1,129 GBP

$1,513 USD

View

Retailer 8

£1,386 GBP

View

B+

Retailer 9

£1,534 GBP

$2,055 USD

View

B+

Retailer 10

£1,587 GBP

$2,126 USD

View

B+

Retailer 11

£1,616 GBP

€2,062 EUR

View

B+

Retailer 12

£1,784 GBP

$2,391 USD

View

B+

Retailer 13

£1,808 GBP

$2,422 USD

View

B+

Retailer 14

£2,488 GBP

ZAR 53,851 ZAR

View

B+

Retailer 15

£2,785 GBP

$3,732 USD

View

B+

Retailer 16

£3,102 GBP

View

Retailer 17

£3,372 GBP

$4,518 USD

View

Retailer 18

£3,373 GBP

SGD 6,107 SGD

View

Retailer 19

£3,647 GBP

$4,887 USD

View

Most Expensive

Brilliant Earth

21827002A · Oct 30

£4,329 GBP

$5,800 USD

View

19 more retailers have this diamond

Prices start from £831 GBPSave up to £3,497 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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