Heart|Lab Grown|IGI

1.42ct D FL Heart Lab Grown Diamond

EX • D/FL • IGI LG804656411

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG804656411

Diamond specifications and retailer prices

From £275 GBP

As of November 4, 2026

Save £1,918 GBP (87%) vs most expensive(unlock to see where)

18 retailers carry this diamond

Most expensive: £2,193 GBP at Brilliant Earth · As of November 4, 2026

View at Brilliant Earth

About this 1.42ct lab-grown heart diamond

This 1.42ct lab-grown heart sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG804656411 or 804656411. Listed at 18 retailers as of November 4, 2026, with prices from £275 to £2,193, a £1,918 spread on the same certified stone. Brilliant Earth lists it at £2,193. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.42

Carat

Colour

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle35.7°

Pavilion angle39.4°

OriginLab Grown

Grading LabIGI

CertificateIGI LG804656411

Dimensions6.95 × 7.79 × 4.57 mm

L/W Ratio1.12

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

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG804656411

Side View

Caratlytics Score

How it works →

A+

Exceptional

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: Nov 4

Current: £2,193 GBP|Low: £275 GBP|High: £2,193 GBP|Avg: £781 GBP

Brilliant Earth

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November 5, 2026

Retailer 7£275 GBP

Retailer 4£307 GBP

Retailer 14£319 GBP

Retailer 3£341 GBP

Retailer 9£361 GBP

Retailer 15£452 GBP

Retailer 10£539 GBP

Retailer 13£544 GBP

Retailer 2£609 GBP

Retailer 8£621 GBP

Retailer 16£787 GBP

Retailer 17£861 GBP

Retailer 12£1,096 GBP

Retailer 18£1,124 GBP

Retailer 5£1,184 GBP

Retailer 11£1,328 GBP

Retailer 6£1,366 GBP

Brilliant Earth£2,193 GBP

29 data points across 18 retailers

18 retailers£275 GBP to £2,193 GBP

A+

Cheapest Retailer

£275 GBP

Retailer 2

£307 GBP

View

Final sale: no returns

Retailer 3

£319 GBP

View

Retailer 4

£341 GBP

View

Retailer 5

£361 GBP

View

Price last confirmed 11 days ago

Retailer 6

£452 GBP

View

Retailer 7

£539 GBP

View

Retailer 8

£544 GBP

View

Retailer 9

£609 GBP

View

Retailer 10

£621 GBP

View

B+

Retailer 11

£787 GBP

View

B+

Retailer 12

£861 GBP

View

B+

Retailer 13

£1,096 GBP

View

B+

Retailer 14

£1,124 GBP

View

B+

Retailer 15

£1,184 GBP

View

B+

Retailer 16

£1,328 GBP

View

B+

Retailer 17

£1,366 GBP

View

Most Expensive

Brilliant Earth

21420565A · Nov 4

£2,193 GBP

$2,960 USD

View

17 more retailers have this diamond

Prices start from £275 GBPSave up to £1,918 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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