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Marquise|Lab Grown|IGI

4.09ct E IF Marquise Lab Grown Diamond

EX • E/IF • IGI LG761513916

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG761513916

Diamond specifications and retailer prices

From £3,140 GBP
$4,207 USD
As of October 29, 2026
Save £8,470 GBP (73%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £11,610 GBP at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 4.09ct lab-grown marquise diamond

This 4.09ct 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 LG761513916 or 761513916. Listed at 18 retailers as of October 29, 2026, with prices from £3,140 to £11,610, a £8,470 spread on the same certified stone. Taylor and Hart lists it at £11,610. 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

4.09
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG761513916
Dimensions8.37 × 8.37 × 16.36 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.37 mm8.37 mm4.09 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG761513916
Side View
Table 57.0%Crown 34.2°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 63.2%

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 29
Current: £8,613 GBP|Low: £3,140 GBP|High: £16,686 GBP|Avg: £7,739 GBP|-18.9%
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
Taylor and Hart
October 30, 2026
Retailer 2£3,140 GBP
Retailer 13£4,011 GBP
Retailer 7£4,298 GBP
Retailer 14£4,560 GBP
Retailer 10£4,750 GBP
Retailer 4£5,027 GBP
Retailer 12£5,903 GBP
Retailer 9£7,003 GBP
Retailer 11£7,067 GBP
Retailer 8£7,549 GBP
Retailer 3£8,274 GBP
Retailer 1£8,613 GBP
Retailer 5£11,182 GBP
Retailer 6£11,340 GBP
Taylor and Hart£11,610 GBP

43 data points across 15 retailers

18 retailers£3,140 GBP to £11,610 GBP

A
Cheapest Retailer
-
£3,140 GBP
$4,207 USD
Final sale: no returns
A
Retailer 2
-
£4,011 GBP
$5,374 USD
View
A
Retailer 3
-
£4,298 GBP
View
Retailer 4
-
£4,303 GBP
$5,766 USD
View
Price last confirmed 32 days ago
A
Retailer 5
-
£4,560 GBP
$6,110 USD
View
Retailer 6
-
£4,697 GBP
$6,294 USD
View
Price last confirmed 32 days ago
A
Retailer 7
-
£4,750 GBP
$6,365 USD
View
A
Retailer 8
-
£5,027 GBP
View
A
Retailer 9
-
£5,903 GBP
$7,910 USD
View
A
Retailer 10
-
£7,003 GBP
View
Retailer 11
-
£7,067 GBP
A$14,568 AUD
View
Price last confirmed 8 days ago
A
Retailer 12
-
£7,549 GBP
€9,633 EUR
View
A
Retailer 13
-
£7,903 GBP
$10,589 USD
View
B+
Retailer 14
-
£8,274 GBP
$11,086 USD
View
A
Retailer 15
-
£8,613 GBP
$11,540 USD
View
B+
Retailer 16
-
£11,182 GBP
SGD 20,247 SGD
View
Retailer 17
-
£11,340 GBP
A$23,375 AUD
View
Price last confirmed 22 days ago
Most Expensive
B+
Taylor and Hart
IB45CX1 · Oct 30
£11,610 GBP
$15,556 USD
View
17 more retailers have this diamond
Prices start from £3,140 GBPSave up to £8,470 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
4.09ct Marquise
£3,140 GBP