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Marquise|Lab Grown|IGI

1.04ct E SI1 Marquise Lab Grown Diamond

ID • E/SI1 • IGI LG841647386

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG841647386

Diamond specifications and retailer prices

From £210 GBP
As of October 31, 2026
Save £388 GBP (65%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £598 GBP at MOH London · As of October 25, 2026
View at MOH London

About this 1.04ct lab-grown marquise diamond

This 1.04ct lab-grown marquise sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG841647386 or 841647386. Listed at 5 retailers as of October 25, 2026, with prices from £210 to £598, a £388 spread on the same certified stone. MOH London lists it at £598. 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

1.04
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.4°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG841647386
Dimensions10.10 × 5.35 × 3.30 mm
L/W Ratio1.89
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.10 mm5.35 mm1.04 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG841647386
Side View
Table 58.0%Crown 32.4°Girdle: MED-THKPavilion 39.6°Culet: NoneDepth 61.7%

Caratlytics Score

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

Last verified: Oct 31
Current: £598 GBP|Low: £210 GBP|High: £603 GBP|Avg: £305 GBP|-0.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 31, 2026
Retailer 2£210 GBP
Retailer 4£225 GBP
Retailer 5£235 GBP
Retailer 3£237 GBP
MOH London£598 GBP

18 data points across 5 retailers

5 retailers£210 GBP to £598 GBP

A
Cheapest Retailer
-
£210 GBP
A
Retailer 2
-
£225 GBP
$301 USD
View
A
Retailer 3
-
£235 GBP
$315 USD
View
A
Retailer 4
-
£237 GBP
View
Most Expensive
B
MOH London
LG841647386 · Oct 25
£598 GBP
View
4 more retailers have this diamond
Prices start from £210 GBPSave up to £388 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
1.04ct Marquise
£210 GBP