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Marquise|Lab Grown|IGI

1.21ct F VS2 Marquise Lab Grown Diamond

ID • F/VS2 • IGI LG797658270

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG797658270

Diamond specifications and retailer prices

From £239 GBP
As of November 6, 2026
Save £588 GBP (71%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £827 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.21ct lab-grown marquise diamond

This 1.21ct lab-grown marquise sits in the classic one-carat band, graded F colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG797658270 or 797658270. Listed at 5 retailers as of November 1, 2026, with prices from £239 to £827, a £588 spread on the same certified stone. MOH London lists it at £827. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
F
Colour
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.6°
Pavilion angle42.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG797658270
Dimensions11.24 × 5.36 × 3.46 mm
L/W Ratio2.10
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.24 mm5.36 mm1.21 ctF / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG797658270
Side View
Table 59.0%Crown 32.6°Girdle: MED-THKPavilion 42.2°Culet: NoneDepth 64.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £827 GBP|Low: £239 GBP|High: £838 GBP|Avg: £460 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 1, 2026
Retailer 3£239 GBP
Retailer 5£345 GBP
Retailer 4£417 GBP
Retailer 2£491 GBP
MOH London£827 GBP

12 data points across 5 retailers

5 retailers£239 GBP to £827 GBP

B+
Cheapest Retailer
-
£239 GBP
A
Retailer 2
-
£345 GBP
View
B+
Retailer 3
-
£417 GBP
View
Retailer 4
-
£491 GBP
View
Price last confirmed 9 days ago
Most Expensive
B
MOH London
LG797658270 · Nov 1
£827 GBP
View
4 more retailers have this diamond
Prices start from £239 GBPSave up to £588 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
1.21ct Marquise
£239 GBP