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Marquise|Lab Grown|IGI

4.03ct E IF Marquise Lab Grown Diamond

ID • E/IF • IGI LG839683323

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG839683323

Diamond specifications and retailer prices

From £2,310 GBP
As of October 30, 2026
Save £7,354 GBP (76%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £9,663 GBP at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 4.03ct lab-grown marquise diamond

This 4.03ct 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 LG839683323 or 839683323. Listed at 19 retailers as of October 30, 2026, with prices from £2,310 to £9,663, a £7,354 spread on the same certified stone. Taylor and Hart lists it at £9,663. 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

4.03
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839683323
Dimensions15.79 × 8.23 × 5.23 mm
L/W Ratio1.92
Girdle conditionFaceted
Culet sizeNone
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.79 mm8.23 mm4.03 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839683323
Side View
Table 63.0%Crown 37°Girdle: STK-THKPavilion 40.5°Culet: NoneDepth 63.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £3,675 GBP|Low: £2,310 GBP|High: £13,344 GBP|Avg: £5,218 GBP|-28.7%
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
October 31, 2026
Retailer 11£2,310 GBP
Retailer 10£2,669 GBP
Retailer 5£2,881 GBP
Retailer 1£3,675 GBP
Retailer 4£3,744 GBP
Retailer 7£3,891 GBP
Retailer 8£4,300 GBP
Retailer 3£4,336 GBP
Retailer 6£4,777 GBP
Retailer 12£6,389 GBP
Retailer 2£6,465 GBP
Retailer 9£6,903 GBP
Taylor and Hart£9,663 GBP

28 data points across 13 retailers

19 retailers£2,310 GBP to £9,663 GBP

A
Cheapest Retailer
-
£2,310 GBP
A
Retailer 2
-
£2,669 GBP
$3,576 USD
View
Final sale: no returns
A
Retailer 3
-
£2,881 GBP
$3,860 USD
View
Retailer 4
-
£3,221 GBP
$4,316 USD
View
Price last confirmed 26 days ago
Retailer 5
-
£3,355 GBP
$4,496 USD
View
Price last confirmed 31 days ago
Retailer 6
-
£3,517 GBP
$4,712 USD
View
Price last confirmed 32 days ago
A
Retailer 7
-
£3,675 GBP
View
Retailer 8
-
£3,744 GBP
$5,017 USD
View
Price last confirmed 18 days ago
Retailer 9
-
£3,839 GBP
$5,144 USD
View
Price last confirmed 32 days ago
A
Retailer 10
-
£3,891 GBP
$5,214 USD
View
Retailer 11
-
£3,893 GBP
$5,216 USD
View
Price last confirmed 28 days ago
A
Retailer 12
-
£4,300 GBP
$5,761 USD
View
A
Retailer 13
-
£4,336 GBP
$5,810 USD
View
A
Retailer 14
-
£4,777 GBP
View
Retailer 15
-
£4,865 GBP
$6,518 USD
View
Price last confirmed 30 days ago
A
Retailer 16
-
£6,389 GBP
ZAR 138,297 ZAR
View
A
Retailer 17
-
£6,465 GBP
View
A
Retailer 18
-
£6,903 GBP
$9,249 USD
View
Most Expensive
B+
Taylor and Hart
QHVPPCE · Oct 30
£9,663 GBP
$12,948 USD
View
18 more retailers have this diamond
Prices start from £2,310 GBPSave up to £7,354 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
4.03ct Marquise
£2,310 GBP