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Marquise|Lab Grown|IGI

1.07ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG850629746

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG850629746

Diamond specifications and retailer prices

From £131 GBP
As of November 4, 2026
Save £345 GBP (73%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £476 GBP at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.07ct lab-grown marquise diamond

This 1.07ct 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 LG850629746 or 850629746. Listed at 3 retailers as of November 4, 2026, with prices from £131 to £476, a £345 spread on the same certified stone. Brilliant Earth lists it at £476. 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

1.07
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG850629746
Dimensions10.57 × 5.42 × 3.31 mm
L/W Ratio1.95
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.57 mm5.42 mm1.07 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG850629746
Side View
Table 62.0%Crown 34.3°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 61.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £476 GBP|Low: £131 GBP|High: £476 GBP|Avg: £318 GBP
Brilliant Earth
Retailer 2
Retailer 3
November 6, 2026
Retailer 3£131 GBP
Retailer 2£259 GBP
Brilliant Earth£476 GBP

11 data points across 3 retailers

3 retailers£131 GBP to £476 GBP

A
Cheapest Retailer
-
£131 GBP
Final sale: no returns
B+
Retailer 2
-
£259 GBP
View
Most Expensive
B
Brilliant Earth
22321584A · Nov 4
£476 GBP
$640 USD
View
2 more retailers have this diamond
Prices start from £131 GBPSave up to £345 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
1.07ct Marquise
£131 GBP