Marquise|Lab Grown|IGI

4.27ct E FL Marquise Lab Grown Diamond

EX • E/FL • IGI LG826611285

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG826611285

Diamond specifications and retailer prices

From £6,529 GBP

$8,748 USD

As of October 30, 2026

Save £17,446 GBP (73%) vs most expensive(unlock to see where)

24 retailers carry this diamond

Most expensive: £23,975 GBP at Taylor and Hart · As of October 31, 2026

View at Taylor and Hart

About this 4.27ct lab-grown marquise diamond

This 4.27ct lab-grown marquise sits in the three to five carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG826611285 or 826611285. Listed at 24 retailers as of October 30, 2026, with prices from £6,529 to £23,975, a £17,446 spread on the same certified stone. Taylor and Hart lists it at £23,975. 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

4.27

Carat

Colour

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle34.8°

Pavilion angle40.1°

OriginLab Grown

Grading LabIGI

CertificateIGI LG826611285

Dimensions16.17 × 8.59 × 5.26 mm

L/W Ratio1.88

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 LG826611285

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: £13,788 GBP|Low: £6,268 GBP|High: £38,152 GBP|Avg: £13,004 GBP

Retailer 1

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Taylor and Hart

November 1, 2026

Retailer 20£6,529 GBP

Retailer 18£6,808 GBP

Retailer 14£6,930 GBP

Retailer 8£6,986 GBP

Retailer 11£7,501 GBP

Retailer 5£7,512 GBP

Retailer 4£7,573 GBP

Retailer 22£7,573 GBP

Retailer 2£8,517 GBP

Retailer 21£8,652 GBP

Retailer 6£8,787 GBP

Retailer 16£9,117 GBP

Retailer 7£10,851 GBP

Retailer 3£11,918 GBP

Retailer 17£12,013 GBP

Retailer 1£13,788 GBP

Retailer 12£16,120 GBP

Retailer 19£17,142 GBP

Retailer 15£17,213 GBP

Retailer 9£19,771 GBP

Retailer 13£21,093 GBP

Taylor and Hart£23,975 GBP

Retailer 10£38,152 GBP

35 data points across 23 retailers

24 retailers£6,529 GBP to £23,975 GBP

Cheapest Retailer

£6,529 GBP

$8,748 USD

Retailer 2

£6,790 GBP

$9,098 USD

View

Retailer 3

£6,808 GBP

$9,122 USD

View

Retailer 4

£6,930 GBP

CA$12,897 CAD

View

Retailer 5

£6,986 GBP

$9,361 USD

View

Retailer 6

£7,501 GBP

$10,050 USD

View

Retailer 7

£7,512 GBP

$10,065 USD

View

Retailer 8

£7,573 GBP

$10,147 USD

View

Retailer 9

£7,573 GBP

$10,147 USD

View

Price last confirmed 16 days ago

Retailer 10

£8,517 GBP

$11,412 USD

View

Retailer 11

£8,652 GBP

$11,593 USD

View

Retailer 12

£8,787 GBP

$11,774 USD

View

Final sale: no returns

Retailer 13

£9,117 GBP

View

B+

Retailer 14

£10,851 GBP

View

B+

Retailer 15

£11,918 GBP

$15,969 USD

View

B+

Retailer 16

£12,013 GBP

€15,330 EUR

View

B+

Retailer 17

£13,788 GBP

View

B+

Retailer 18

£16,120 GBP

ZAR 348,926 ZAR

View

Retailer 19

£17,142 GBP

$22,968 USD

View

Retailer 20

£17,213 GBP

$23,063 USD

View

Retailer 21

£19,771 GBP

$26,491 USD

View

Price last confirmed 9 days ago

Retailer 22

£21,093 GBP

$28,262 USD

View

Most Expensive

Taylor and Hart

NC40QQR · Oct 31

£23,975 GBP

$32,124 USD

View

22 more retailers have this diamond

Prices start from £6,529 GBPSave up to £17,446 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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