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Princess|Lab Grown|IGI

1.21ct F VS1 Princess Lab Grown Diamond

ID • F/VS1 • IGI LG828668799

Shape and cutting style on the report: Princess cut

Certificate IGI LG828668799

Diamond specifications and retailer prices

From £132 GBP
As of November 4, 2026
Save £632 GBP (83%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £764 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.21ct lab-grown princess diamond

This 1.21ct lab-grown princess sits in the classic one-carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG828668799 or 828668799. Listed at 9 retailers as of November 4, 2026, with prices from £132 to £764, a £632 spread on the same certified stone. MOH London lists it at £764. 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
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.6°
Pavilion angle37.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG828668799
Dimensions5.91 × 5.81 × 4.03 mm
L/W Ratio1.02
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.91 mm5.81 mm1.21 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG828668799
Side View
Table 70.0%Crown 42.6°Girdle: MediumPavilion 37.9°Culet: NoneDepth 69.4%

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: £764 GBP|Low: £132 GBP|High: £792 GBP|Avg: £466 GBP|-3.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 5, 2026
Retailer 6£132 GBP
Retailer 4£153 GBP
Retailer 7£197 GBP
Retailer 3£282 GBP
Retailer 2£399 GBP
Retailer 9£527 GBP
Retailer 5£556 GBP
Retailer 8£567 GBP
Retailer 10£678 GBP
MOH London£764 GBP

27 data points across 10 retailers

9 retailers£132 GBP to £764 GBP

A
Cheapest Retailer
-
£132 GBP
A
Retailer 2
-
£153 GBP
View
Retailer 3
-
£282 GBP
View
Price last confirmed 8 days ago
B+
Retailer 4
-
£399 GBP
View
B+
Retailer 5
-
£527 GBP
View
B
Retailer 6
-
£556 GBP
View
B+
Retailer 7
-
£567 GBP
View
Retailer 8
-
£678 GBP
View
Price last confirmed 24 days ago
Most Expensive
B
MOH London
LG828668799 · Nov 5
£764 GBP
View
8 more retailers have this diamond
Prices start from £132 GBPSave up to £632 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 Princess
£132 GBP