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Marquise|Lab Grown|IGI

1.04ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG784614661

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG784614661

Diamond specifications and retailer prices

From £493 GBP
$660 USD
As of October 30, 2026
1 retailer carries this diamond
Only listing: £493 GBP at Brilliant Earth
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 Brilliant Earth

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 LG784614661 or 784614661. Listed at a single retailer as of October 30, 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

1.04
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG784614661
Dimensions10.73 × 5.12 × 3.29 mm
L/W Ratio2.10
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.73 mm5.12 mm1.04 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG784614661
Side View
Table 62.0%Crown 35.2°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 64.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 30
Current: £493 GBP|Low: £95 GBP|High: £746 GBP|Avg: £373 GBP|-30.5%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
August 10, 2026
Retailer 6£210 GBP
Retailer 4£228 GBP
Retailer 10£241 GBP
Retailer 2£264 GBP
Retailer 7£264 GBP
Retailer 5£357 GBP
Retailer 8£388 GBP
Retailer 3£414 GBP
Brilliant Earth£493 GBP
Retailer 9£517 GBP

72 data points across 10 retailers

1 retailer

B
Brilliant Earth
18321754A · Oct 30
£493 GBP
$660 USD
View

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.

B
1.04ct Marquise
£493 GBP