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Marquise|Lab Grown|IGI

1.01ct E SI1 Marquise Lab Grown Diamond

ID • E/SI1 • IGI LG823639837

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG823639837

Diamond specifications and retailer prices

From £152 GBP
As of November 4, 2026
Save £455 GBP (75%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £607 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1.01ct lab-grown marquise diamond

This 1.01ct 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 LG823639837 or 823639837. Listed at 8 retailers as of November 2, 2026, with prices from £152 to £607, a £455 spread on the same certified stone. MOH London lists it at £607. 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

1.01
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle30°
Pavilion angle39.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG823639837
Dimensions11.43 × 5.11 × 3.00 mm
L/W Ratio2.24
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.43 mm5.11 mm1.01 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG823639837
Side View
Table 61.0%Crown 30°Girdle: MED-THKPavilion 39.7°Culet: NoneDepth 58.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £607 GBP|Low: £177 GBP|High: £614 GBP|Avg: £296 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 3, 2026
Retailer 6£177 GBP
Retailer 7£215 GBP
Retailer 2£222 GBP
Retailer 4£236 GBP
Retailer 3£246 GBP
Retailer 5£364 GBP
MOH London£607 GBP

41 data points across 7 retailers

8 retailers£152 GBP to £607 GBP

A
Cheapest Retailer
-
£152 GBP
B+
Retailer 2
-
£177 GBP
View
A
Retailer 3
-
£215 GBP
View
A
Retailer 4
-
£222 GBP
View
Retailer 5
-
£236 GBP
View
Price last confirmed 10 days ago
A
Retailer 6
-
£246 GBP
View
B+
Retailer 7
-
£364 GBP
View
Most Expensive
B
MOH London
LG823639837 · Nov 2
£607 GBP
View
7 more retailers have this diamond
Prices start from £152 GBPSave up to £455 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
1.01ct Marquise
£152 GBP