Marquise|Lab Grown|IGI

1.57ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG667458721

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG667458721

Diamond specifications and retailer prices

From £882 GBP

€1,126 EUR

As of October 27, 2026

Save £2,528 GBP (74%) vs most expensive(unlock to see where)

22 retailers carry this diamond

Most expensive: £3,411 GBP at Brilliant Earth · As of October 26, 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 LG667458721 or 667458721. Listed at 22 retailers as of October 26, 2026, with prices from £882 to £3,411, a £2,528 spread on the same certified stone. Brilliant Earth lists it at £3,411. 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 angle37.4°

Pavilion angle40.3°

OriginLab Grown

Grading LabIGI

CertificateIGI LG667458721

Dimensions11.91 × 5.95 × 3.83 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 LG667458721

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: £3,411 GBP|Low: £373 GBP|High: £3,411 GBP|Avg: £1,201 GBP|+23.8%

Brilliant Earth

Retailer 2

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October 27, 2026

Retailer 7£394 GBP

Retailer 11£418 GBP

Retailer 20£441 GBP

Retailer 14£462 GBP

Retailer 5£489 GBP

Retailer 8£698 GBP

Retailer 12£709 GBP

Retailer 13£710 GBP

Retailer 17£747 GBP

Retailer 18£866 GBP

Retailer 2£882 GBP

Retailer 9£1,085 GBP

Retailer 6£1,093 GBP

Retailer 3£1,285 GBP

Retailer 19£1,422 GBP

Retailer 4£1,545 GBP

Retailer 21£1,588 GBP

Retailer 16£1,672 GBP

Retailer 22£1,812 GBP

Retailer 10£1,940 GBP

Retailer 15£2,657 GBP

Brilliant Earth£3,411 GBP

31 data points across 22 retailers

22 retailers£882 GBP to £3,411 GBP

Retailer 1

£394 GBP

$528 USD

Price last confirmed 11 days ago

Retailer 2

£418 GBP

$560 USD

View

Price last confirmed 12 days ago

Retailer 3

£462 GBP

$619 USD

View

Price last confirmed 16 days ago

Retailer 4

£489 GBP

$655 USD

View

Price last confirmed 11 days ago

Retailer 5

£698 GBP

$935 USD

View

Price last confirmed 9 days ago

Retailer 6

£709 GBP

$950 USD

View

Price last confirmed 9 days ago

Retailer 7

£710 GBP

$951 USD

View

Price last confirmed 9 days ago

Retailer 8

£747 GBP

View

Price last confirmed 10 days ago

Retailer 9

£866 GBP

$1,160 USD

View

Price last confirmed 9 days ago

Retailer 10

£882 GBP

€1,126 EUR

View

Retailer 11

£1,085 GBP

A$2,236 AUD

View

Price last confirmed 12 days ago

Retailer 12

£1,093 GBP

$1,465 USD

View

Price last confirmed 10 days ago

Retailer 13

£1,285 GBP

$1,722 USD

View

Price last confirmed 11 days ago

Retailer 14

£1,422 GBP

View

Price last confirmed 10 days ago

Retailer 15

£1,545 GBP

SGD 2,798 SGD

View

Price last confirmed 10 days ago

Retailer 16

£1,588 GBP

$2,128 USD

View

Price last confirmed 10 days ago

Retailer 17

£1,629 GBP

$2,183 USD

View

Price last confirmed 11 days ago

Retailer 18

£1,672 GBP

$2,240 USD

View

Price last confirmed 10 days ago

Retailer 19

£1,812 GBP

$2,428 USD

View

Price last confirmed 10 days ago

Retailer 20

£1,940 GBP

View

Price last confirmed 14 days ago

Retailer 21

£2,657 GBP

A$5,478 AUD

View

Price last confirmed 25 days ago

Most Expensive

Brilliant Earth

18032155A · Oct 26

£3,411 GBP

$4,570 USD

View

21 more retailers have this diamond

Prices start from £882 GBPSave up to £2,528 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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