Marquise|Lab Grown|IGI

4.02ct D IF Marquise Lab Grown Diamond

ID • D/IF • IGI LG839622928

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG839622928

Diamond specifications and retailer prices

From £3,520 GBP

$4,717 USD

As of October 31, 2026

Save £12,942 GBP (79%) vs most expensive(unlock to see where)

19 retailers carry this diamond

Most expensive: £16,462 GBP at Taylor and Hart · As of October 31, 2026

View at Taylor and Hart

About this 4.02ct lab-grown marquise diamond

This 4.02ct lab-grown marquise sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG839622928 or 839622928. Listed at 19 retailers as of October 31, 2026, with prices from £3,520 to £16,462, a £12,942 spread on the same certified stone. Taylor and Hart lists it at £16,462. 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

4.02

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle34.5°

Pavilion angle36.9°

OriginLab Grown

Grading LabIGI

CertificateIGI LG839622928

Dimensions16.18 × 8.33 × 4.94 mm

L/W Ratio1.94

Girdle conditionFaceted

Culet sizeNone

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 LG839622928

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 31

Current: £3,855 GBP|Low: £3,046 GBP|High: £18,015 GBP|Avg: £7,837 GBP|-11.4%

Retailer 1

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Retailer 12

Taylor and Hart

November 1, 2026

Retailer 11£3,520 GBP

Retailer 1£3,855 GBP

Retailer 10£4,259 GBP

Retailer 8£4,262 GBP

Retailer 7£4,719 GBP

Retailer 9£4,745 GBP

Retailer 4£5,156 GBP

Retailer 5£6,563 GBP

Retailer 3£7,530 GBP

Retailer 6£8,727 GBP

Retailer 2£9,913 GBP

Retailer 12£10,314 GBP

Taylor and Hart£16,462 GBP

35 data points across 13 retailers

19 retailers£3,520 GBP to £16,462 GBP

Cheapest Retailer

£3,520 GBP

$4,717 USD

Final sale: no returns

Retailer 2

£3,855 GBP

View

Retailer 3

£4,259 GBP

$5,706 USD

View

Retailer 4

£4,262 GBP

$5,710 USD

View

Retailer 5

£4,268 GBP

$5,718 USD

View

Price last confirmed 27 days ago

Retailer 6

£4,445 GBP

$5,956 USD

View

Price last confirmed 32 days ago

Retailer 7

£4,659 GBP

$6,242 USD

View

Price last confirmed 33 days ago

Retailer 8

£4,719 GBP

View

Retailer 9

£4,745 GBP

$6,358 USD

View

Retailer 10

£5,085 GBP

$6,814 USD

View

Price last confirmed 33 days ago

Retailer 11

£5,156 GBP

$6,909 USD

View

Price last confirmed 19 days ago

Retailer 12

£5,156 GBP

$6,909 USD

View

Price last confirmed 29 days ago

Retailer 13

£6,121 GBP

$8,202 USD

View

Price last confirmed 31 days ago

Retailer 14

£6,563 GBP

View

Retailer 15

£7,530 GBP

$10,090 USD

View

Retailer 16

£8,727 GBP

$11,693 USD

View

B+

Retailer 17

£9,913 GBP

View

B+

Retailer 18

£10,314 GBP

ZAR 223,248 ZAR

View

Most Expensive

Taylor and Hart

BUYZF8Z · Oct 31

£16,462 GBP

$22,058 USD

View

18 more retailers have this diamond

Prices start from £3,520 GBPSave up to £12,942 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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