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Round|Lab Grown|IGI

1.20ct F VS1 Round Lab Grown Diamond

ID • F/VS1 • IGI LG846644437

Shape and cutting style on the report: Round brilliant

Certificate IGI LG846644437

Diamond specifications and retailer prices

From £124 GBP
As of November 3, 2026
Save £593 GBP (83%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £718 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.2ct lab-grown round diamond

This 1.2ct lab-grown round 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 LG846644437 or 846644437. Listed at 20 retailers as of November 3, 2026, with prices from £124 to £718, a £593 spread on the same certified stone. MOH London lists it at £718. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.20
Carat
F
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846644437
Dimensions6.89 × 6.93 × 4.15 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.89 mm6.93 mm1.20 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846644437
Side View
Table 60.0%Crown 33.5°Girdle: MediumPavilion 41°Culet: NoneDepth 60.0%

Caratlytics Score

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

Price History

Last verified: Nov 3
Current: £718 GBP|Low: £124 GBP|High: £723 GBP|Avg: £335 GBP|-0.8%
MOH London
Retailer 2
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Retailer 20
November 5, 2026
Retailer 4£124 GBP
Retailer 3£144 GBP
Retailer 5£154 GBP
Retailer 20£154 GBP
Retailer 11£180 GBP
Retailer 9£207 GBP
Retailer 18£261 GBP
Retailer 13£264 GBP
Retailer 16£265 GBP
Retailer 2£270 GBP
Retailer 7£284 GBP
Retailer 6£339 GBP
Retailer 14£359 GBP
Retailer 15£375 GBP
Retailer 17£380 GBP
Retailer 19£495 GBP
Retailer 8£512 GBP
Retailer 10£516 GBP
Retailer 12£535 GBP
MOH London£718 GBP

18 data points across 20 retailers

20 retailers£124 GBP to £718 GBP

A
Cheapest Retailer
-
£124 GBP
A
Retailer 2
-
£144 GBP
View
A
Retailer 3
-
£154 GBP
View
Retailer 4
-
£154 GBP
View
Price last confirmed 11 days ago
A
Retailer 5
-
£180 GBP
View
B+
Retailer 6
-
£207 GBP
View
A
Retailer 7
-
£261 GBP
View
A
Retailer 8
-
£264 GBP
View
A
Retailer 9
-
£265 GBP
View
A
Retailer 10
-
£270 GBP
View
A
Retailer 11
-
£284 GBP
View
B+
Retailer 12
-
£339 GBP
View
B+
Retailer 13
-
£359 GBP
View
B+
Retailer 14
-
£375 GBP
View
B+
Retailer 15
-
£380 GBP
View
B
Retailer 16
-
£495 GBP
View
B
Retailer 17
-
£512 GBP
View
B
Retailer 18
-
£516 GBP
View
B
Retailer 19
-
£535 GBP
View
Most Expensive
B
MOH London
LG846644437 · Nov 4
£718 GBP
View
19 more retailers have this diamond
Prices start from £124 GBPSave up to £593 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
1.20ct Round
£124 GBP