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Princess|Lab Grown|IGI

1.21ct F VS1 Princess Lab Grown Diamond

ID • F/VS1 • IGI LG784695508

Shape and cutting style on the report: Princess cut

Certificate IGI LG784695508

Diamond specifications and retailer prices

From £143 GBP
As of November 2, 2026
Save £686 GBP (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £828 GBP at MOH London · As of November 2, 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 LG784695508 or 784695508. Listed at 19 retailers as of November 2, 2026, with prices from £143 to £828, a £686 spread on the same certified stone. MOH London lists it at £828. 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 angle41.5°
Pavilion angle35.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG784695508
Dimensions5.93 × 5.77 × 4.03 mm
L/W Ratio1.03
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.93 mm5.77 mm1.21 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG784695508
Side View
Table 65.0%Crown 41.5°Girdle: STK-THKPavilion 35.6°Culet: NoneDepth 69.8%

Caratlytics Score

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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 2
Current: £828 GBP|Low: £137 GBP|High: £839 GBP|Avg: £371 GBP
MOH London
Retailer 2
Retailer 3
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Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 16
November 3, 2026
Retailer 14£143 GBP
Retailer 6£160 GBP
Retailer 7£166 GBP
Retailer 5£178 GBP
Retailer 16£178 GBP
Retailer 10£305 GBP
Retailer 3£310 GBP
Retailer 2£319 GBP
Retailer 8£415 GBP
Retailer 9£432 GBP
Retailer 12£472 GBP
Retailer 11£547 GBP
Retailer 15£565 GBP
Retailer 4£570 GBP
Retailer 13£572 GBP
MOH London£828 GBP

43 data points across 16 retailers

19 retailers£143 GBP to £828 GBP

A
Cheapest Retailer
-
£143 GBP
A
Retailer 2
-
£160 GBP
View
Final sale: no returns
A
Retailer 3
-
£166 GBP
View
Retailer 4
-
£178 GBP
View
Price last confirmed 12 days ago
A
Retailer 5
-
£178 GBP
View
A
Retailer 6
-
£305 GBP
View
A
Retailer 7
-
£310 GBP
View
A
Retailer 8
-
£319 GBP
View
A
Retailer 9
-
£325 GBP
View
B+
Retailer 10
-
£415 GBP
View
B+
Retailer 11
-
£432 GBP
View
Retailer 12
-
£472 GBP
View
Price last confirmed 9 days ago
B+
Retailer 13
-
£547 GBP
View
B
Retailer 14
-
£565 GBP
View
B
Retailer 15
-
£570 GBP
View
B
Retailer 16
-
£572 GBP
View
B
Retailer 17
-
£609 GBP
View
B
Retailer 18
-
£690 GBP
View
Most Expensive
B
MOH London
LG784695508 · Nov 2
£828 GBP
View
18 more retailers have this diamond
Prices start from £143 GBPSave up to £686 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
£143 GBP