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Marquise|Lab Grown|IGI

4.08ct F SI1 Marquise Lab Grown Diamond

VG • F/SI1 • IGI LG848680451

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG848680451

Diamond specifications and retailer prices

From £758 GBP
As of November 2, 2026
Save £1,298 GBP (63%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £2,056 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 4.08ct lab-grown marquise diamond

This 4.08ct lab-grown marquise sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG848680451 or 848680451. Listed at 4 retailers as of November 1, 2026, with prices from £758 to £2,056, a £1,298 spread on the same certified stone. MOH London lists it at £2,056. 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

4.08
Carat
F
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle38.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG848680451
Dimensions15.64 × 8.57 × 5.20 mm
L/W Ratio1.82
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.64 mm8.57 mm4.08 ctF / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG848680451
Side View
Table 57.0%Crown 35.3°Girdle: MED-STKPavilion 38.8°Culet: NoneDepth 60.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 2
Current: £2,056 GBP|Low: £757 GBP|High: £2,058 GBP|Avg: £1,110 GBP|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 2, 2026
Retailer 2£758 GBP
Retailer 3£762 GBP
Retailer 4£886 GBP
MOH London£2,056 GBP

9 data points across 4 retailers

4 retailers£758 GBP to £2,056 GBP

A
Cheapest Retailer
-
£758 GBP
B+
Retailer 2
-
£762 GBP
$1,022 USD
View
B+
Retailer 3
-
£886 GBP
$1,189 USD
View
Most Expensive
B
MOH London
LG848680451 · Nov 1
£2,056 GBP
View
3 more retailers have this diamond
Prices start from £758 GBPSave up to £1,298 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
4.08ct Marquise
£758 GBP