Marquise|Lab Grown|IGI

1.57ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG615345318

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG615345318

Diamond specifications and retailer prices

From £1,057 GBP

A$2,178 AUD

As of October 31, 2026

20 retailers carry this diamond

Most expensive: £2,732 GBP at Brilliant Earth · As of October 12, 2026

View at Brilliant Earth

About this 1.57ct lab-grown marquise diamond

This 1.57ct lab-grown marquise 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 LG615345318 or 615345318. Listed at 20 retailers as of October 31, 2026. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.57

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle35.9°

Pavilion angle40.4°

OriginLab Grown

Grading LabIGI

CertificateIGI LG615345318

Dimensions12.68 × 5.93 × 3.69 mm

L/W Ratio2.14

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 LG615345318

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 31

Current: £2,732 GBP|Low: £453 GBP|High: £4,023 GBP|Avg: £1,358 GBP|-1.6%

Brilliant Earth

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October 29, 2026

Retailer 21£453 GBP

Retailer 18£552 GBP

Retailer 24£561 GBP

Retailer 16£569 GBP

Retailer 9£681 GBP

Retailer 13£683 GBP

Retailer 25£719 GBP

Retailer 17£850 GBP

Retailer 15£875 GBP

Retailer 20£929 GBP

Retailer 23£947 GBP

Retailer 2£1,057 GBP

Retailer 4£1,059 GBP

Retailer 3£1,341 GBP

Retailer 10£1,475 GBP

Retailer 19£1,618 GBP

Retailer 26£1,630 GBP

Retailer 8£1,791 GBP

Retailer 14£1,797 GBP

Retailer 5£1,845 GBP

Retailer 7£2,084 GBP

Retailer 12£2,209 GBP

Retailer 22£2,471 GBP

Retailer 11£2,689 GBP

Brilliant Earth£2,732 GBP

Retailer 6£4,023 GBP

30 data points across 26 retailers

20 retailers

Retailer 1

£453 GBP

$607 USD

Price last confirmed 21 days ago

Retailer 2

£552 GBP

$739 USD

View

Price last confirmed 33 days ago

Retailer 3

£561 GBP

$752 USD

View

Price last confirmed 22 days ago

Retailer 4

£850 GBP

HK$8,900 HKD

View

Price last confirmed 29 days ago

Retailer 5

£875 GBP

$1,172 USD

View

Price last confirmed 20 days ago

Retailer 6

£929 GBP

View

Price last confirmed 19 days ago

Retailer 7

£1,057 GBP

A$2,178 AUD

View

Retailer 8

£1,059 GBP

ZAR 22,916 ZAR

View

Price last confirmed 23 days ago

Retailer 9

£1,341 GBP

$1,797 USD

View

Price last confirmed 19 days ago

Retailer 10

£1,475 GBP

$1,976 USD

View

Price last confirmed 19 days ago

Retailer 11

£1,618 GBP

A$3,336 AUD

View

Price last confirmed 34 days ago

Retailer 12

£1,630 GBP

$2,184 USD

View

Price last confirmed 22 days ago

Retailer 13

£1,791 GBP

$2,400 USD

View

Price last confirmed 21 days ago

Retailer 14

£1,797 GBP

View

Price last confirmed 25 days ago

Retailer 15

£1,845 GBP

$2,473 USD

View

Price last confirmed 21 days ago

Retailer 16

£2,084 GBP

$2,792 USD

View

Price last confirmed 20 days ago

Retailer 17

£2,209 GBP

SGD 4,000 SGD

View

Price last confirmed 20 days ago

Retailer 18

£2,471 GBP

View

Price last confirmed 21 days ago

Retailer 19

£2,689 GBP

A$5,544 AUD

View

Price last confirmed 24 days ago

Most Expensive

Brilliant Earth

16161667Y · Oct 12

£2,732 GBP

$3,660 USD

View

Price last confirmed 20 days ago

19 more retailers have this diamond

Prices start from £1,057 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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