Marquise|Lab Grown|IGI

4.02ct D IF Marquise Lab Grown Diamond

EX • D/IF • IGI LG743593708

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG743593708

Diamond specifications and retailer prices

From £7,896 GBP

$10,580 USD

As of October 28, 2026

Save £21,715 GBP (73%) vs most expensive(unlock to see where)

31 retailers carry this diamond

Most expensive: £29,612 GBP at Cape Diamonds · As of October 29, 2026

View at Cape Diamonds

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 LG743593708 or 743593708. Listed at 31 retailers as of October 28, 2026, with prices from £7,896 to £29,612, a £21,715 spread on the same certified stone. Cape Diamonds lists it at £29,612. 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

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle33.9°

Pavilion angle40.2°

OriginLab Grown

Grading LabIGI

CertificateIGI LG743593708

Dimensions16.50 × 8.43 × 5.12 mm

L/W Ratio1.96

Girdle conditionFaceted

Culet sizePointed

Cert comments

As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG743593708

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 28

Current: £29,612 GBP|Low: £7,033 GBP|High: £52,000 GBP|Avg: £20,399 GBP|+1.9%

Cape Diamonds

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November 1, 2026

Retailer 23£7,896 GBP

Retailer 18£9,279 GBP

Retailer 12£10,660 GBP

Retailer 7£10,864 GBP

Retailer 9£11,126 GBP

Retailer 24£11,647 GBP

Retailer 10£12,429 GBP

Retailer 3£12,473 GBP

Retailer 25£12,973 GBP

Retailer 8£13,038 GBP

Retailer 14£14,995 GBP

Retailer 22£15,195 GBP

Retailer 20£15,709 GBP

Retailer 15£19,927 GBP

Retailer 13£21,851 GBP

Retailer 6£22,773 GBP

Retailer 17£23,648 GBP

Retailer 21£23,673 GBP

Retailer 19£24,083 GBP

Cape Diamonds£29,612 GBP

Retailer 2£30,191 GBP

Retailer 4£34,680 GBP

Retailer 16£38,811 GBP

Retailer 5£48,676 GBP

Retailer 11£52,000 GBP

31 data points across 25 retailers

31 retailers£7,896 GBP to £29,612 GBP

Cheapest Retailer

£7,896 GBP

$10,580 USD

B+

Retailer 2

£9,279 GBP

$12,433 USD

View

B+

Retailer 3

£10,660 GBP

$14,283 USD

View

B+

Retailer 4

£10,864 GBP

$14,557 USD

View

Retailer 5

£10,864 GBP

$14,557 USD

View

Price last confirmed 24 days ago

Retailer 6

£10,864 GBP

$14,557 USD

View

Price last confirmed 32 days ago

Retailer 7

£11,126 GBP

$14,907 USD

View

Price last confirmed 33 days ago

Retailer 8

£11,647 GBP

View

Price last confirmed 15 days ago

Retailer 9

£12,429 GBP

$16,653 USD

View

Price last confirmed 33 days ago

B+

Retailer 10

£12,473 GBP

$16,712 USD

View

Retailer 11

£12,603 GBP

$16,886 USD

View

Price last confirmed 29 days ago

Retailer 12

£12,603 GBP

$16,886 USD

View

Price last confirmed 22 days ago

B+

Retailer 13

£12,973 GBP

$17,382 USD

View

B+

Retailer 14

£13,038 GBP

$17,469 USD

View

Retailer 15

£13,038 GBP

$17,469 USD

View

Price last confirmed 31 days ago

Retailer 16

£13,038 GBP

$17,469 USD

View

Price last confirmed 22 days ago

Retailer 17

£14,995 GBP

$20,092 USD

View

Final sale: no returns

B+

Retailer 18

£15,195 GBP

$20,360 USD

View

B+

Retailer 19

£15,709 GBP

View

Retailer 20

£19,927 GBP

View

Retailer 21

£21,851 GBP

View

Retailer 22

£22,773 GBP

$30,513 USD

View

Retailer 23

£23,673 GBP

€30,209 EUR

View

Retailer 24

£24,083 GBP

A$49,643 AUD

View

Most Expensive

Cape Diamonds

cert_743593708 · Oct 29

£29,612 GBP

ZAR 640,974 ZAR

View

24 more retailers have this diamond

Prices start from £7,896 GBPSave up to £21,715 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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