Marquise|Lab Grown|IGI

2.50ct E FL Marquise Lab Grown Diamond

EX • E/FL • IGI LG818673798

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG818673798

Diamond specifications and retailer prices

From £2,271 GBP

$3,043 USD

As of October 30, 2026

Save £6,903 GBP (75%) vs most expensive(unlock to see where)

19 retailers carry this diamond

Most expensive: £9,174 GBP at Taylor and Hart · As of October 31, 2026

View at Taylor and Hart

About this 2.5ct lab-grown marquise diamond

This 2.5ct lab-grown marquise sits in the two to three carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818673798 or 818673798. Listed at 19 retailers as of October 30, 2026, with prices from £2,271 to £9,174, a £6,903 spread on the same certified stone. Taylor and Hart lists it at £9,174. 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

2.50

Carat

Colour

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle33.9°

Pavilion angle35.3°

OriginLab Grown

Grading LabIGI

CertificateIGI LG818673798

Dimensions13.48 × 7.04 × 4.11 mm

L/W Ratio1.91

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 LG818673798

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: £3,560 GBP|Low: £2,180 GBP|High: £9,174 GBP|Avg: £3,991 GBP|-2.4%

Retailer 1

Retailer 2

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Taylor and Hart

October 31, 2026

Retailer 2£2,271 GBP

Retailer 7£2,440 GBP

Retailer 16£2,470 GBP

Retailer 3£2,543 GBP

Retailer 5£2,635 GBP

Retailer 8£2,635 GBP

Retailer 6£2,652 GBP

Retailer 11£2,672 GBP

Retailer 17£2,754 GBP

Retailer 14£3,198 GBP

Retailer 4£3,292 GBP

Retailer 1£3,560 GBP

Retailer 15£3,708 GBP

Retailer 9£4,093 GBP

Retailer 10£4,538 GBP

Retailer 18£6,617 GBP

Retailer 13£6,686 GBP

Retailer 12£6,795 GBP

Taylor and Hart£9,174 GBP

31 data points across 19 retailers

19 retailers£2,271 GBP to £9,174 GBP

Cheapest Retailer

£2,271 GBP

$3,043 USD

Retailer 2

£2,440 GBP

$3,270 USD

View

Retailer 3

£2,470 GBP

$3,310 USD

View

Retailer 4

£2,543 GBP

$3,408 USD

View

Final sale: no returns

Retailer 5

£2,635 GBP

$3,530 USD

View

Price last confirmed 19 days ago

Retailer 6

£2,635 GBP

$3,530 USD

View

Retailer 7

£2,652 GBP

$3,553 USD

View

Retailer 8

£2,672 GBP

View

Retailer 9

£2,754 GBP

$3,690 USD

View

B+

Retailer 10

£3,198 GBP

$4,285 USD

View

B+

Retailer 11

£3,292 GBP

$4,411 USD

View

B+

Retailer 12

£3,560 GBP

View

B+

Retailer 13

£3,708 GBP

$4,968 USD

View

B+

Retailer 14

£4,093 GBP

$5,484 USD

View

B+

Retailer 15

£4,538 GBP

View

Retailer 16

£6,617 GBP

$8,866 USD

View

Retailer 17

£6,686 GBP

View

Retailer 18

£6,795 GBP

ZAR 147,090 ZAR

View

Most Expensive

Taylor and Hart

QL501ID · Oct 31

£9,174 GBP

$12,292 USD

View

18 more retailers have this diamond

Prices start from £2,271 GBPSave up to £6,903 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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