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Marquise|Lab Grown|IGI

1.01ct E SI1 Marquise Lab Grown Diamond

VG • E/SI1 • IGI LG839602662

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG839602662

Diamond specifications and retailer prices

From £113 GBP
As of November 4, 2026
Save £548 GBP (83%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £661 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 very-good cut grade and certified by IGI LG839602662 or 839602662. Listed at 9 retailers as of November 2, 2026, with prices from £113 to £661, a £548 spread on the same certified stone. MOH London lists it at £661. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.01
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.4°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839602662
Dimensions9.81 × 5.22 × 3.37 mm
L/W Ratio1.88
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.81 mm5.22 mm1.01 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839602662
Side View
Table 61.0%Crown 37.4°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 64.6%

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: £661 GBP|Low: £109 GBP|High: £668 GBP|Avg: £334 GBP|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 5, 2026
Retailer 3£113 GBP
Retailer 6£131 GBP
Retailer 2£180 GBP
Retailer 7£247 GBP
Retailer 8£368 GBP
Retailer 9£377 GBP
Retailer 5£449 GBP
Retailer 4£474 GBP
MOH London£661 GBP

27 data points across 9 retailers

9 retailers£113 GBP to £661 GBP

A
Cheapest Retailer
-
£113 GBP
A
Retailer 2
-
£131 GBP
View
A
Retailer 3
-
£180 GBP
View
Retailer 4
-
£247 GBP
View
Price last confirmed 12 days ago
B
Retailer 5
-
£368 GBP
View
B
Retailer 6
-
£377 GBP
View
B
Retailer 7
-
£449 GBP
View
B
Retailer 8
-
£474 GBP
View
Most Expensive
B
MOH London
LG839602662 · Nov 2
£661 GBP
View
8 more retailers have this diamond
Prices start from £113 GBPSave up to £548 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
£113 GBP