Heart|Lab Grown|IGI

1.33ct E IF Heart Lab Grown Diamond

ID • E/IF • IGI LG589310549

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG589310549

Diamond specifications and retailer prices

From £246 GBP

$327 USD

As of October 27, 2026

Save £1,361 GBP (85%) vs most expensive(unlock to see where)

19 retailers carry this diamond

Most expensive: £1,607 GBP at Brilliant Earth · As of October 28, 2026

View at Brilliant Earth

About this 1.33ct lab-grown heart diamond

This 1.33ct lab-grown heart sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG589310549 or 589310549. Listed at 19 retailers as of October 27, 2026, with prices from £246 to £1,607, a £1,361 spread on the same certified stone. Brilliant Earth lists it at £1,607. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.33

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle34.4°

Pavilion angle40.6°

OriginLab Grown

Grading LabIGI

CertificateIGI LG589310549

Dimensions6.99 × 7.54 × 4.48 mm

L/W Ratio1.08

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 LG589310549

Side View

Caratlytics Score

How it works →

Excellent

Excellent quality and great value

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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27

Current: £1,607 GBP|Low: £274 GBP|High: £1,607 GBP|Avg: £726 GBP

Brilliant Earth

Retailer 2

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Retailer 7

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Retailer 14

October 30, 2026

Retailer 5£274 GBP

Retailer 12£409 GBP

Retailer 11£421 GBP

Retailer 7£490 GBP

Retailer 14£492 GBP

Retailer 10£523 GBP

Retailer 2£544 GBP

Retailer 3£718 GBP

Retailer 13£732 GBP

Retailer 9£740 GBP

Retailer 6£1,013 GBP

Retailer 4£1,201 GBP

Retailer 8£1,227 GBP

Brilliant Earth£1,607 GBP

39 data points across 14 retailers

19 retailers£246 GBP to £1,607 GBP

Cheapest Retailer

£246 GBP

$327 USD

Retailer 2

£274 GBP

$365 USD

View

Final sale: no returns

Retailer 3

£285 GBP

$379 USD

View

Retailer 4

£305 GBP

$406 USD

View

Retailer 5

£305 GBP

$406 USD

View

Retailer 6

£409 GBP

$545 USD

View

Retailer 7

£421 GBP

$560 USD

View

Retailer 8

£490 GBP

€622 EUR

View

Retailer 9

£492 GBP

$655 USD

View

Retailer 10

£523 GBP

ZAR 11,262 ZAR

View

Retailer 11

£544 GBP

View

B+

Retailer 12

£718 GBP

$956 USD

View

B+

Retailer 13

£732 GBP

$975 USD

View

B+

Retailer 14

£740 GBP

A$1,516 AUD

View

B+

Retailer 15

£979 GBP

$1,304 USD

View

B+

Retailer 16

£1,013 GBP

$1,349 USD

View

Retailer 17

£1,201 GBP

$1,599 USD

View

B+

Retailer 18

£1,227 GBP

View

Most Expensive

Brilliant Earth

14093094A · Oct 28

£1,607 GBP

$2,140 USD

View

18 more retailers have this diamond

Prices start from £246 GBPSave up to £1,361 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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1.33ct Heart

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