Marquise|Lab Grown|IGI

2.56ct E FL Marquise Lab Grown Diamond

ID • E/FL • IGI LG790644856

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG790644856

Diamond specifications and retailer prices

From £2,325 GBP

$3,115 USD

As of October 30, 2026

Save £7,082 GBP (75%) vs most expensive(unlock to see where)

21 retailers carry this diamond

Most expensive: £9,407 GBP at Taylor and Hart · As of October 31, 2026

View at Taylor and Hart

About this 2.56ct lab-grown marquise diamond

This 2.56ct 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 LG790644856 or 790644856. Listed at 21 retailers as of October 30, 2026, with prices from £2,325 to £9,407, a £7,082 spread on the same certified stone. Taylor and Hart lists it at £9,407. 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

2.56

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle38.4°

Pavilion angle39.9°

OriginLab Grown

Grading LabIGI

CertificateIGI LG790644856

Dimensions14.24 × 7.13 × 4.29 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 LG790644856

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: £2,727 GBP|Low: £2,232 GBP|High: £9,407 GBP|Avg: £4,700 GBP|-1.3%

Retailer 1

Retailer 2

Retailer 3

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Retailer 19

Taylor and Hart

November 1, 2026

Retailer 3£2,325 GBP

Retailer 7£2,538 GBP

Retailer 4£2,602 GBP

Retailer 5£2,696 GBP

Retailer 9£2,696 GBP

Retailer 8£2,709 GBP

Retailer 1£2,727 GBP

Retailer 18£2,814 GBP

Retailer 6£3,370 GBP

Retailer 12£3,578 GBP

Retailer 17£3,795 GBP

Retailer 15£3,859 GBP

Retailer 10£4,652 GBP

Retailer 16£4,746 GBP

Retailer 2£6,721 GBP

Retailer 14£6,871 GBP

Retailer 13£6,955 GBP

Retailer 19£7,843 GBP

Retailer 11£9,068 GBP

Taylor and Hart£9,407 GBP

37 data points across 20 retailers

21 retailers£2,325 GBP to £9,407 GBP

Cheapest Retailer

£2,325 GBP

$3,115 USD

Retailer 2

£2,529 GBP

$3,389 USD

View

Retailer 3

£2,538 GBP

$3,401 USD

View

Retailer 4

£2,602 GBP

$3,487 USD

View

Final sale: no returns

Retailer 5

£2,696 GBP

$3,613 USD

View

Price last confirmed 19 days ago

Retailer 6

£2,696 GBP

$3,613 USD

View

Retailer 7

£2,709 GBP

$3,630 USD

View

Retailer 8

£2,727 GBP

View

Retailer 9

£2,814 GBP

$3,770 USD

View

B+

Retailer 10

£3,370 GBP

$4,515 USD

View

B+

Retailer 11

£3,578 GBP

View

B+

Retailer 12

£3,795 GBP

$5,085 USD

View

B+

Retailer 13

£3,859 GBP

$5,170 USD

View

B+

Retailer 14

£4,652 GBP

View

B+

Retailer 15

£4,746 GBP

€6,056 EUR

View

Retailer 16

£6,721 GBP

$9,006 USD

View

Retailer 17

£6,871 GBP

View

Retailer 18

£6,955 GBP

ZAR 150,553 ZAR

View

Retailer 19

£7,843 GBP

$10,508 USD

View

Retailer 20

£9,068 GBP

SGD 16,419 SGD

View

Most Expensive

Taylor and Hart

N59CBHO · Oct 31

£9,407 GBP

$12,604 USD

View

20 more retailers have this diamond

Prices start from £2,325 GBPSave up to £7,082 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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