Marquise|Lab Grown|IGI

4.02ct E IF Marquise Lab Grown Diamond

ID • E/IF • IGI LG660455301

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG660455301

Diamond specifications and retailer prices

From £3,595 GBP

$4,817 USD

As of October 31, 2026

Save £22,452 GBP (86%) vs most expensive(unlock to see where)

22 retailers carry this diamond

Most expensive: £26,047 GBP at Do Amore Diamonds · As of October 30, 2026

View at Do Amore Diamonds

About this 4.02ct lab-grown marquise diamond

This 4.02ct lab-grown marquise sits in the three to five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG660455301 or 660455301. Listed at 22 retailers as of October 30, 2026, with prices from £3,595 to £26,047, a £22,452 spread on the same certified stone. Do Amore Diamonds lists it at £26,047. 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 angle35.2°

Pavilion angle40.2°

OriginLab Grown

Grading LabIGI

CertificateIGI LG660455301

Dimensions16.73 × 8.43 × 5.20 mm

L/W Ratio1.98

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 LG660455301

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: £18,128 GBP|Low: £2,635 GBP|High: £20,867 GBP|Avg: £6,409 GBP|-13.1%

Do Amore Diamonds

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Retailer 12

Retailer 13

Retailer 14

Retailer 15

Retailer 16

Retailer 17

Retailer 18

Retailer 19

October 30, 2026

Retailer 9£2,635 GBP

Retailer 19£2,867 GBP

Retailer 8£2,951 GBP

Retailer 6£3,056 GBP

Retailer 11£3,396 GBP

Retailer 12£3,595 GBP

Retailer 16£4,133 GBP

Retailer 5£4,216 GBP

Retailer 14£4,498 GBP

Retailer 13£4,740 GBP

Retailer 7£5,198 GBP

Retailer 18£5,366 GBP

Retailer 4£7,101 GBP

Retailer 17£7,265 GBP

Retailer 15£7,341 GBP

Retailer 10£7,754 GBP

Retailer 2£9,628 GBP

Retailer 3£11,952 GBP

Do Amore Diamonds£18,128 GBP

30 data points across 19 retailers

22 retailers£3,595 GBP to £26,047 GBP

Retailer 1

£2,635 GBP

$3,530 USD

Price last confirmed 8 days ago

Retailer 2

£2,867 GBP

$3,841 USD

View

Price last confirmed 10 days ago

Retailer 3

£3,056 GBP

$4,095 USD

View

Price last confirmed 9 days ago

Retailer 4

£3,396 GBP

$4,550 USD

View

Price last confirmed 8 days ago

Retailer 5

£3,408 GBP

$4,567 USD

View

Price last confirmed 18 days ago

Retailer 6

£3,595 GBP

$4,817 USD

View

Retailer 7

£4,133 GBP

$5,538 USD

View

Price last confirmed 8 days ago

Retailer 8

£4,216 GBP

$5,649 USD

View

Price last confirmed 9 days ago

Retailer 9

£4,498 GBP

View

Price last confirmed 8 days ago

Retailer 10

£4,740 GBP

$6,351 USD

View

Price last confirmed 8 days ago

Retailer 11

£5,198 GBP

View

Price last confirmed 7 days ago

Retailer 12

£5,366 GBP

$7,190 USD

View

Price last confirmed 10 days ago

Retailer 13

£7,101 GBP

ZAR 153,710 ZAR

View

Price last confirmed 11 days ago

Retailer 14

£7,265 GBP

View

Price last confirmed 10 days ago

Retailer 15

£7,341 GBP

A$15,133 AUD

View

Price last confirmed 8 days ago

Retailer 16

£7,754 GBP

$10,390 USD

View

Price last confirmed 9 days ago

B+

Retailer 17

£9,628 GBP

$12,900 USD

View

Retailer 18

£10,434 GBP

$13,980 USD

View

Price last confirmed 7 days ago

Retailer 19

£11,220 GBP

$15,034 USD

View

Price last confirmed 10 days ago

Retailer 20

£11,952 GBP

$16,014 USD

View

Price last confirmed 9 days ago

Retailer 21

£18,128 GBP

$24,290 USD

View

Price last confirmed 8 days ago

Most Expensive

Do Amore Diamonds

23-660455301 · Oct 30

£26,047 GBP

$34,900 USD

View

21 more retailers have this diamond

Prices start from £3,595 GBPSave up to £22,452 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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