Marquise|Lab Grown|IGI

1.59ct E IF Marquise Lab Grown Diamond

ID • E/IF • IGI LG790656718

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG790656718

Diamond specifications and retailer prices

From £347 GBP

$462 USD

As of October 27, 2026

Save £2,018 GBP (85%) vs most expensive(unlock to see where)

30 retailers carry this diamond

Most expensive: £2,365 GBP at Brilliant Earth · As of October 28, 2026

View at Brilliant Earth

About this 1.59ct lab-grown marquise diamond

This 1.59ct lab-grown marquise sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG790656718 or 790656718. Listed at 30 retailers as of October 27, 2026, with prices from £347 to £2,365, a £2,018 spread on the same certified stone. Brilliant Earth lists it at £2,365. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.59

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle32.8°

Pavilion angle40.4°

OriginLab Grown

Grading LabIGI

CertificateIGI LG790656718

Dimensions12.27 × 6.12 × 12.27 mm

L/W Ratio2.00

Girdle conditionFaceted

Culet sizePointed

Cert comments

This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG790656718

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 27

Current: £2,365 GBP|Low: £388 GBP|High: £2,373 GBP|Avg: £1,132 GBP|-0.3%

Brilliant Earth

Retailer 2

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October 30, 2026

Retailer 24£388 GBP

Retailer 18£404 GBP

Retailer 6£430 GBP

Retailer 23£471 GBP

Retailer 20£537 GBP

Retailer 10£578 GBP

Retailer 9£666 GBP

Retailer 21£685 GBP

Retailer 3£702 GBP

Retailer 2£713 GBP

Retailer 19£739 GBP

Retailer 7£879 GBP

Retailer 4£996 GBP

Retailer 13£1,002 GBP

Retailer 15£1,259 GBP

Retailer 12£1,367 GBP

Retailer 8£1,383 GBP

Retailer 14£1,406 GBP

Retailer 5£1,510 GBP

Retailer 11£1,524 GBP

Retailer 22£1,582 GBP

Retailer 17£1,787 GBP

Retailer 16£1,874 GBP

Brilliant Earth£2,365 GBP

30 data points across 24 retailers

30 retailers£347 GBP to £2,365 GBP

A+

Cheapest Retailer

£347 GBP

$462 USD

Retailer 2

£388 GBP

$517 USD

View

Retailer 3

£404 GBP

$538 USD

View

Final sale: no returns

Retailer 4

£430 GBP

$573 USD

View

Price last confirmed 13 days ago

Retailer 5

£430 GBP

$573 USD

View

Retailer 6

£471 GBP

HK$4,900 HKD

View

Retailer 7

£537 GBP

$715 USD

View

Retailer 8

£578 GBP

$770 USD

View

Retailer 9

£666 GBP

$887 USD

View

Retailer 10

£685 GBP

€869 EUR

View

Retailer 11

£702 GBP

A$1,438 AUD

View

Retailer 12

£713 GBP

View

Retailer 13

£739 GBP

ZAR 15,906 ZAR

View

Retailer 14

£879 GBP

$1,170 USD

View

Retailer 15

£996 GBP

$1,327 USD

View

Retailer 16

£1,002 GBP

A$2,053 AUD

View

Retailer 17

£1,259 GBP

View

B+

Retailer 18

£1,367 GBP

SGD 2,460 SGD

View

B+

Retailer 19

£1,383 GBP

$1,842 USD

View

B+

Retailer 20

£1,406 GBP

$1,872 USD

View

B+

Retailer 21

£1,447 GBP

$1,927 USD

View

B+

Retailer 22

£1,510 GBP

$2,011 USD

View

B+

Retailer 23

£1,524 GBP

$2,030 USD

View

B+

Retailer 24

£1,582 GBP

View

Retailer 25

£1,696 GBP

$2,258 USD

View

Price last confirmed 50 days ago

Retailer 26

£1,787 GBP

$2,380 USD

View

Price last confirmed 22 days ago

B+

Retailer 27

£1,841 GBP

View

Retailer 28

£1,874 GBP

A$3,839 AUD

View

Price last confirmed 22 days ago

Retailer 29

£2,365 GBP

$3,150 USD

View

Price last confirmed 13 days ago

Most Expensive

Brilliant Earth

20473735A · Oct 28

£2,365 GBP

$3,150 USD

View

29 more retailers have this diamond

Prices start from £347 GBPSave up to £2,018 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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