Heart|Lab Grown|IGI

1.58ct D IF Heart Lab Grown Diamond

ID • D/IF • IGI LG742505336

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG742505336

Diamond specifications and retailer prices

From £234 GBP

$314 USD

As of October 30, 2026

Save £1,915 GBP (89%) vs most expensive(unlock to see where)

13 retailers carry this diamond

Most expensive: £2,149 GBP at Brilliant Earth · As of October 30, 2026

View at Brilliant Earth

About this 1.58ct lab-grown heart diamond

This 1.58ct lab-grown heart sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG742505336 or 742505336. Listed at 13 retailers as of October 30, 2026, with prices from £234 to £2,149, a £1,915 spread on the same certified stone. Brilliant Earth lists it at £2,149. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.58

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle34.9°

Pavilion angle41.4°

OriginLab Grown

Grading LabIGI

CertificateIGI LG742505336

Dimensions7.19 × 7.88 × 4.87 mm

L/W Ratio1.10

Girdle conditionFaceted

Culet sizePointed

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 LG742505336

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: Oct 30

Current: £2,149 GBP|Low: £216 GBP|High: £2,538 GBP|Avg: £882 GBP|-15.3%

Brilliant Earth

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 4£234 GBP

Retailer 7£272 GBP

Retailer 5£303 GBP

Retailer 11£377 GBP

Retailer 10£405 GBP

Retailer 2£484 GBP

Retailer 9£485 GBP

Retailer 13£730 GBP

Retailer 12£935 GBP

Retailer 8£1,048 GBP

Retailer 6£1,172 GBP

Retailer 3£1,263 GBP

Brilliant Earth£2,149 GBP

36 data points across 13 retailers

13 retailers£234 GBP to £2,149 GBP

A+

Cheapest Retailer

£234 GBP

$314 USD

Retailer 2

£272 GBP

$364 USD

View

Retailer 3

£303 GBP

$406 USD

View

Final sale: no returns

Retailer 4

£377 GBP

$505 USD

View

Retailer 5

£405 GBP

$542 USD

View

Retailer 6

£484 GBP

€618 EUR

View

Retailer 7

£485 GBP

$650 USD

View

Retailer 8

£730 GBP

$978 USD

View

B+

Retailer 9

£935 GBP

$1,253 USD

View

B+

Retailer 10

£1,048 GBP

$1,404 USD

View

B+

Retailer 11

£1,172 GBP

View

B+

Retailer 12

£1,263 GBP

$1,692 USD

View

Most Expensive

Brilliant Earth

16536818A · Oct 30

£2,149 GBP

$2,880 USD

View

12 more retailers have this diamond

Prices start from £234 GBPSave up to £1,915 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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A+

1.58ct Heart

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