Marquise|Lab Grown|IGI

4.31ct E FL Marquise Lab Grown Diamond

EX • E/FL • IGI LG793603302

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG793603302

Diamond specifications and retailer prices

From £6,589 GBP

$8,828 USD

As of October 27, 2026

Save £17,571 GBP (73%) vs most expensive(unlock to see where)

24 retailers carry this diamond

Most expensive: £24,159 GBP at Taylor and Hart · As of October 26, 2026

View at Taylor and Hart

About this 4.31ct lab-grown marquise diamond

This 4.31ct 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 LG793603302 or 793603302. Listed at 24 retailers as of October 26, 2026, with prices from £6,589 to £24,159, a £17,571 spread on the same certified stone. Taylor and Hart lists it at £24,159. 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

4.31

Carat

Colour

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle34.2°

Pavilion angle40.4°

OriginLab Grown

Grading LabIGI

CertificateIGI LG793603302

Dimensions16.79 × 8.65 × 5.23 mm

L/W Ratio1.94

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 LG793603302

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: £12,125 GBP|Low: £6,324 GBP|High: £38,510 GBP|Avg: £13,096 GBP|-3.5%

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Taylor and Hart

October 27, 2026

Retailer 22£6,589 GBP

Retailer 4£6,852 GBP

Retailer 20£6,872 GBP

Retailer 14£6,995 GBP

Retailer 9£7,052 GBP

Retailer 11£7,568 GBP

Retailer 6£7,581 GBP

Retailer 2£7,642 GBP

Retailer 3£8,595 GBP

Retailer 23£8,734 GBP

Retailer 5£8,869 GBP

Retailer 12£9,174 GBP

Retailer 7£10,953 GBP

Retailer 10£12,107 GBP

Retailer 1£12,125 GBP

Retailer 19£12,307 GBP

Retailer 17£13,933 GBP

Retailer 18£16,203 GBP

Retailer 21£17,303 GBP

Retailer 15£17,374 GBP

Retailer 8£19,956 GBP

Retailer 16£21,286 GBP

Taylor and Hart£24,159 GBP

Retailer 13£38,510 GBP

33 data points across 24 retailers

24 retailers£6,589 GBP to £24,159 GBP

Cheapest Retailer

£6,589 GBP

$8,828 USD

Retailer 2

£6,852 GBP

$9,181 USD

View

Price last confirmed 8 days ago

Retailer 3

£6,872 GBP

$9,208 USD

View

Retailer 4

£6,995 GBP

CA$13,017 CAD

View

Retailer 5

£7,052 GBP

$9,449 USD

View

Retailer 6

£7,568 GBP

$10,140 USD

View

Retailer 7

£7,581 GBP

$10,158 USD

View

Retailer 8

£7,642 GBP

$10,240 USD

View

Price last confirmed 7 days ago

Retailer 9

£7,642 GBP

$10,240 USD

View

Price last confirmed 16 days ago

Retailer 10

£8,595 GBP

$11,516 USD

View

Price last confirmed 7 days ago

Retailer 11

£8,734 GBP

$11,702 USD

View

Retailer 12

£9,174 GBP

View

B+

Retailer 13

£10,953 GBP

View

Price last confirmed 7 days ago

Retailer 14

£12,030 GBP

$16,119 USD

View

Price last confirmed 11 days ago

B+

Retailer 15

£12,125 GBP

€15,472 EUR

View

B+

Retailer 16

£12,307 GBP

$16,490 USD

View

B+

Retailer 17

£13,933 GBP

View

Retailer 18

£16,203 GBP

ZAR 350,735 ZAR

View

Price last confirmed 8 days ago

Retailer 19

£17,303 GBP

$23,184 USD

View

Retailer 20

£17,374 GBP

$23,279 USD

View

Retailer 21

£19,956 GBP

$26,739 USD

View

Price last confirmed 9 days ago

Retailer 22

£21,286 GBP

$28,521 USD

View

Most Expensive

Taylor and Hart

8PB1PC0 · Oct 26

£24,159 GBP

$32,371 USD

View

22 more retailers have this diamond

Prices start from £6,589 GBPSave up to £17,571 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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