Marquise|Lab Grown|IGI

1.58ct E IF Marquise Lab Grown Diamond

ID • E/IF • IGI LG812620132

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG812620132

Diamond specifications and retailer prices

From £472 GBP

$629 USD

As of October 27, 2026

Save £1,849 GBP (80%) vs most expensive(unlock to see where)

25 retailers carry this diamond

Most expensive: £2,546 GBP at Brilliant Earth · As of October 22, 2026

View at Brilliant Earth

About this 1.58ct lab-grown marquise diamond

This 1.58ct 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 LG812620132 or 812620132. Listed at 25 retailers as of October 27, 2026, with a 391% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle34.7°

Pavilion angle41.2°

OriginLab Grown

Grading LabIGI

CertificateIGI LG812620132

Dimensions11.69 × 6.14 × 3.85 mm

L/W Ratio1.90

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 LG812620132

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 27

Current: £2,546 GBP|Low: £458 GBP|High: £2,546 GBP|Avg: £1,053 GBP

Brilliant Earth

Retailer 2

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Retailer 22

October 29, 2026

Retailer 3£472 GBP

Retailer 19£514 GBP

Retailer 4£529 GBP

Retailer 13£548 GBP

Retailer 15£553 GBP

Retailer 10£609 GBP

Retailer 9£650 GBP

Retailer 6£791 GBP

Retailer 5£825 GBP

Retailer 8£899 GBP

Retailer 21£912 GBP

Retailer 2£918 GBP

Retailer 17£1,007 GBP

Retailer 11£1,377 GBP

Retailer 14£1,414 GBP

Retailer 18£1,541 GBP

Retailer 22£1,767 GBP

Retailer 12£1,825 GBP

Retailer 7£1,892 GBP

Retailer 20£1,925 GBP

Retailer 16£2,321 GBP

Brilliant Earth£2,546 GBP

32 data points across 22 retailers

25 retailers£472 GBP to £2,321 GBP

Cheapest Retailer

£472 GBP

$629 USD

Retailer 2

£514 GBP

$685 USD

View

Retailer 3

£529 GBP

$704 USD

View

Final sale: no returns

Retailer 4

£548 GBP

$730 USD

View

Retailer 5

£553 GBP

$737 USD

View

Price last confirmed 17 days ago

Retailer 6

£609 GBP

View

Price last confirmed 7 days ago

Retailer 7

£650 GBP

$865 USD

View

Retailer 8

£791 GBP

$1,053 USD

View

Retailer 9

£825 GBP

$1,098 USD

View

Retailer 10

£899 GBP

€1,140 EUR

View

Retailer 11

£912 GBP

$1,214 USD

View

Retailer 12

£918 GBP

View

Retailer 13

£1,007 GBP

ZAR 21,665 ZAR

View

B+

Retailer 14

£1,377 GBP

A$2,822 AUD

View

Price last confirmed 8 days ago

B+

Retailer 15

£1,400 GBP

$1,864 USD

View

B+

Retailer 16

£1,414 GBP

$1,883 USD

View

B+

Retailer 17

£1,541 GBP

$2,052 USD

View

B+

Retailer 18

£1,717 GBP

View

Price last confirmed 18 days ago

B+

Retailer 19

£1,767 GBP

$2,353 USD

View

B+

Retailer 20

£1,825 GBP

$2,430 USD

View

B+

Retailer 21

£1,889 GBP

$2,515 USD

View

B+

Retailer 22

£1,892 GBP

$2,520 USD

View

B+

Retailer 23

£1,925 GBP

$2,563 USD

View

B+

Retailer 24

£2,321 GBP

View

Most Expensive

Brilliant Earth

20677445A · Oct 22

£2,546 GBP

$3,390 USD

View

Price last confirmed 7 days ago

24 more retailers have this diamond

Prices start from £472 GBPSave up to £1,849 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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