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Marquise|Lab Grown|IGI

4.01ct F SI1 Marquise Lab Grown Diamond

EX • F/SI1 • IGI LG581317416

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG581317416

Diamond specifications and retailer prices

From £1,665 GBP
$2,235 USD
As of November 2, 2026
1 retailer carries this diamond
Only listing: £1,665 GBP at B2C Jewels
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at B2C Jewels

About this 4.01ct lab-grown marquise diamond

This 4.01ct lab-grown marquise sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG581317416 or 581317416. Listed at a single retailer as of November 2, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

4.01
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG581317416
Dimensions16.72 × 8.32 mm
L/W Ratio2.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
16.72 mm8.32 mm4.01 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG581317416
Side View
Table 64.0%Crown 34.3°Girdle: MED-STKPavilion 39.4°Culet: NoneDepth 59.9%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 2
Current: £1,665 GBP|Low: £1,592 GBP|High: £2,065 GBP|Avg: £1,774 GBP|-19.3%
September 23, 2026
B2C Jewels£1,665 GBP

3 data points across 1 retailer

1 retailer

B
B2C Jewels
21649628 · Nov 2
£1,665 GBP
$2,235 USD
View

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B
4.01ct Marquise
£1,665 GBP