CaratHunter
Plans
Marquise|Lab Grown|IGI

4.02ct E IF Marquise Lab Grown Diamond

EX • E/IF • IGI LG754507865

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG754507865

Diamond specifications and retailer prices

From £5,945 GBP
$7,965 USD
As of October 28, 2026
Save £4,982 GBP (46%) vs most expensive(unlock to see where)
31 retailers carry this diamond
Most expensive: £28,431 GBP at Taylor and Hart · As of October 20, 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 E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG754507865 or 754507865. Listed at 31 retailers as of October 28, 2026, with a 84% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754507865
Dimensions16.37 × 8.43 × 5.16 mm
L/W Ratio1.94
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
Top View
16.37 mm8.43 mm4.02 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754507865
Side View
Table 60.0%Crown 33.3°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 61.2%

Caratlytics Score

How it works →
A
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: £10,926 GBP|Low: £5,322 GBP|High: £46,392 GBP|Avg: £15,757 GBP|-2.1%
Retailer 1
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
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Taylor and Hart
October 31, 2026
Retailer 20£5,978 GBP
Retailer 16£6,571 GBP
Retailer 8£7,434 GBP
Retailer 10£7,488 GBP
Retailer 22£7,970 GBP
Retailer 3£8,523 GBP
Retailer 2£9,206 GBP
Retailer 23£9,440 GBP
Retailer 11£10,201 GBP
Retailer 1£10,926 GBP
Retailer 17£11,686 GBP
Retailer 13£13,638 GBP
Retailer 21£15,033 GBP
Retailer 7£15,299 GBP
Retailer 6£15,774 GBP
Retailer 19£16,010 GBP
Retailer 15£16,212 GBP
Retailer 18£20,040 GBP
Retailer 12£20,817 GBP
Retailer 4£23,733 GBP
Retailer 14£26,402 GBP
Taylor and Hart£28,431 GBP
Retailer 9£35,596 GBP
Retailer 5£46,392 GBP

31 data points across 24 retailers

31 retailers£5,945 GBP to £10,926 GBP

A
Cheapest Retailer
-
£5,945 GBP
$7,965 USD
Retailer 2
-
£5,978 GBP
$8,010 USD
View
Price last confirmed 10 days ago
Retailer 3
-
£6,571 GBP
$8,804 USD
View
Price last confirmed 7 days ago
Retailer 4
-
£7,434 GBP
$9,961 USD
View
Price last confirmed 10 days ago
Retailer 5
-
£7,434 GBP
$9,961 USD
View
Price last confirmed 23 days ago
Retailer 6
-
£7,434 GBP
$9,961 USD
View
Price last confirmed 31 days ago
Retailer 7
-
£7,488 GBP
$10,033 USD
View
Price last confirmed 10 days ago
Retailer 8
-
£7,732 GBP
$10,360 USD
View
Price last confirmed 32 days ago
Retailer 9
-
£7,970 GBP
View
Price last confirmed 14 days ago
Retailer 10
-
£8,505 GBP
$11,396 USD
View
Price last confirmed 33 days ago
Retailer 11
-
£8,523 GBP
$11,420 USD
View
Price last confirmed 8 days ago
Retailer 12
-
£8,624 GBP
$11,555 USD
View
Price last confirmed 28 days ago
Retailer 13
-
£8,624 GBP
$11,555 USD
View
Price last confirmed 21 days ago
Retailer 14
-
£8,921 GBP
$11,953 USD
View
Price last confirmed 9 days ago
Retailer 15
-
£8,921 GBP
$11,953 USD
View
Price last confirmed 21 days ago
Retailer 16
-
£8,921 GBP
$11,953 USD
View
Price last confirmed 31 days ago
Retailer 17
-
£9,206 GBP
$12,335 USD
View
Price last confirmed 10 days ago
Retailer 18
-
£9,440 GBP
$12,649 USD
View
Price last confirmed 9 days ago
B+
Retailer 19
-
£10,926 GBP
$14,640 USD
View
Retailer 20
-
£11,686 GBP
View
Price last confirmed 10 days ago
Retailer 21
-
£13,638 GBP
View
Price last confirmed 10 days ago
Retailer 22
-
£15,033 GBP
View
Price last confirmed 10 days ago
Retailer 23
-
£15,299 GBP
A$31,537 AUD
View
Price last confirmed 23 days ago
Retailer 24
-
£15,774 GBP
$21,135 USD
View
Price last confirmed 9 days ago
Retailer 25
-
£20,040 GBP
ZAR 433,777 ZAR
View
Price last confirmed 11 days ago
Retailer 26
-
£20,817 GBP
A$42,912 AUD
View
Price last confirmed 9 days ago
Retailer 27
-
£23,733 GBP
$31,799 USD
View
Price last confirmed 10 days ago
Retailer 28
-
£26,402 GBP
$35,376 USD
View
Price last confirmed 9 days ago
Most Expensive
Taylor and Hart
CAYX2TK · Oct 20
£28,431 GBP
$38,094 USD
View
Price last confirmed 11 days ago
28 more retailers have this diamond
Prices start from £5,945 GBPSave up to £4,982 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.

A
4.02ct Marquise
£5,945 GBP