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Marquise|Lab Grown|IGI

4.06ct E SI1 Marquise Lab Grown Diamond

VG • E/SI1 • IGI LG850602223

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG850602223

Diamond specifications and retailer prices

From £387 GBP
$518 USD
As of October 30, 2026
Save £1,173 GBP (75%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,560 GBP at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 4.06ct lab-grown marquise diamond

This 4.06ct lab-grown marquise sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG850602223 or 850602223. Listed at 11 retailers as of October 30, 2026, with prices from £387 to £1,560, a £1,173 spread on the same certified stone. Taylor and Hart lists it at £1,560. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

4.06
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.8°
Pavilion angle38.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG850602223
Dimensions15.77 × 8.28 × 5.23 mm
L/W Ratio1.90
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.77 mm8.28 mm4.06 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG850602223
Side View
Table 57.0%Crown 37.8°Girdle: MED-STKPavilion 38.8°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 30
Current: £400 GBP|Low: £387 GBP|High: £1,560 GBP|Avg: £806 GBP
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Taylor and Hart
November 1, 2026
Retailer 2£387 GBP
Retailer 1£400 GBP
Retailer 8£433 GBP
Retailer 5£480 GBP
Retailer 7£525 GBP
Retailer 4£582 GBP
Retailer 10£720 GBP
Retailer 3£737 GBP
Retailer 9£1,058 GBP
Retailer 6£1,261 GBP
Taylor and Hart£1,560 GBP

4 data points across 11 retailers

11 retailers£387 GBP to £1,560 GBP

A
Cheapest Retailer
-
£387 GBP
$518 USD
A
Retailer 2
-
£400 GBP
View
A
Retailer 3
-
£433 GBP
$580 USD
View
Final sale: no returns
A
Retailer 4
-
£480 GBP
$643 USD
View
A
Retailer 5
-
£525 GBP
HK$5,500 HKD
View
A
Retailer 6
-
£582 GBP
$780 USD
View
A
Retailer 7
-
£720 GBP
$965 USD
View
A
Retailer 8
-
£737 GBP
View
B+
Retailer 9
-
£1,058 GBP
$1,417 USD
View
B+
Retailer 10
-
£1,261 GBP
$1,690 USD
View
Most Expensive
B
Taylor and Hart
ILW12YG · Oct 31
£1,560 GBP
$2,090 USD
View
10 more retailers have this diamond
Prices start from £387 GBPSave up to £1,173 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
4.06ct Marquise
£387 GBP