Marquise|Lab Grown|IGI

5.09ct D VS1 Marquise Lab Grown Diamond

EX • D/VS1 • IGI LG843668517

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG843668517

Diamond specifications and retailer prices

From £967 GBP

$1,296 USD

As of October 30, 2026

Save £5,720 GBP (86%) vs most expensive(unlock to see where)

23 retailers carry this diamond

Most expensive: £6,687 GBP at Brilliant Earth · As of October 31, 2026

View at Brilliant Earth

About this 5.09ct lab-grown marquise diamond

This 5.09ct lab-grown marquise sits in the over five carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG843668517 or 843668517. Listed at 23 retailers as of October 30, 2026, with prices from £967 to £6,687, a £5,720 spread on the same certified stone. Brilliant Earth lists it at £6,687. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

5.09

Carat

Colour

VS1

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle38.2°

Pavilion angle40.2°

OriginLab Grown

Grading LabIGI

CertificateIGI LG843668517

Dimensions17.42 × 8.87 × 5.61 mm

L/W Ratio1.96

Girdle conditionFaceted

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

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG843668517

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 30

Current: £6,687 GBP|Low: £967 GBP|High: £6,687 GBP|Avg: £2,185 GBP

Brilliant Earth

Retailer 2

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November 1, 2026

Retailer 9£967 GBP

Retailer 22£1,052 GBP

Retailer 14£1,082 GBP

Retailer 5£1,122 GBP

Retailer 8£1,221 GBP

Retailer 23£1,250 GBP

Retailer 12£1,354 GBP

Retailer 16£1,472 GBP

Retailer 2£1,581 GBP

Retailer 20£1,867 GBP

Retailer 18£1,967 GBP

Retailer 3£2,004 GBP

Retailer 11£2,102 GBP

Retailer 13£2,273 GBP

Retailer 19£2,279 GBP

Retailer 15£2,707 GBP

Retailer 7£3,218 GBP

Retailer 6£3,337 GBP

Retailer 21£3,608 GBP

Retailer 17£3,762 GBP

Retailer 10£3,938 GBP

Retailer 4£4,220 GBP

Brilliant Earth£6,687 GBP

18 data points across 23 retailers

23 retailers£967 GBP to £6,687 GBP

Cheapest Retailer

£967 GBP

$1,296 USD

Retailer 2

£1,052 GBP

$1,410 USD

View

Retailer 3

£1,082 GBP

$1,450 USD

View

Final sale: no returns

Retailer 4

£1,122 GBP

$1,503 USD

View

Retailer 5

£1,221 GBP

View

Price last confirmed 15 days ago

Retailer 6

£1,250 GBP

$1,675 USD

View

Retailer 7

£1,354 GBP

$1,814 USD

View

Retailer 8

£1,472 GBP

$1,972 USD

View

Retailer 9

£1,581 GBP

View

B+

Retailer 10

£1,867 GBP

€2,382 EUR

View

B+

Retailer 11

£1,967 GBP

$2,635 USD

View

B+

Retailer 12

£2,004 GBP

$2,685 USD

View

B+

Retailer 13

£2,102 GBP

$2,817 USD

View

B+

Retailer 14

£2,273 GBP

A$4,686 AUD

View

B+

Retailer 15

£2,279 GBP

ZAR 49,330 ZAR

View

Retailer 16

£2,707 GBP

View

Retailer 17

£3,218 GBP

$4,312 USD

View

Retailer 18

£3,337 GBP

$4,472 USD

View

Retailer 19

£3,608 GBP

View

Retailer 20

£3,762 GBP

A$7,755 AUD

View

Retailer 21

£3,938 GBP

$5,276 USD

View

Retailer 22

£4,220 GBP

$5,655 USD

View

Most Expensive

Brilliant Earth

22286823A · Oct 31

£6,687 GBP

$8,960 USD

View

22 more retailers have this diamond

Prices start from £967 GBPSave up to £5,720 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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