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Round|Lab Grown|IGI

1.20ct F VS1 Round Lab Grown Diamond

ID • F/VS1 • IGI LG670445426

Shape and cutting style on the report: Round brilliant

Certificate IGI LG670445426

Diamond specifications and retailer prices

From £199 GBP
As of November 4, 2026
Save £684 GBP (77%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £883 GBP at MOH London · As of November 2, 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 LG670445426 or 670445426. Listed at 20 retailers as of November 2, 2026, with prices from £199 to £883, a £684 spread on the same certified stone. MOH London lists it at £883. 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 angle35.7°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG670445426
Dimensions6.77 × 6.81 × 4.22 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.77 mm6.81 mm1.20 ctF / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG670445426
Side View
Table 57.0%Crown 35.7°Girdle: MediumPavilion 40.9°Culet: NoneDepth 62.1%

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 4
Current: £883 GBP|Low: £206 GBP|High: £893 GBP|Avg: £464 GBP|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 5, 2026
Retailer 2£206 GBP
Retailer 3£310 GBP
Retailer 8£359 GBP
Retailer 5£379 GBP
Retailer 10£380 GBP
Retailer 6£381 GBP
Retailer 4£413 GBP
Retailer 9£539 GBP
Retailer 11£652 GBP
Retailer 7£711 GBP
MOH London£883 GBP

37 data points across 11 retailers

20 retailers£199 GBP to £883 GBP

A
Cheapest Retailer
-
£199 GBP
Final sale: no returns
A
Retailer 2
-
£206 GBP
View
Retailer 3
-
£221 GBP
View
Price last confirmed 11 days ago
B+
Retailer 4
-
£302 GBP
View
B+
Retailer 5
-
£310 GBP
View
Retailer 6
-
£356 GBP
View
Price last confirmed 126 days ago
B+
Retailer 7
-
£359 GBP
View
B+
Retailer 8
-
£379 GBP
View
B+
Retailer 9
-
£380 GBP
View
B+
Retailer 10
-
£381 GBP
View
B+
Retailer 11
-
£413 GBP
View
B+
Retailer 12
-
£453 GBP
View
B
Retailer 13
-
£539 GBP
View
B
Retailer 14
-
£560 GBP
View
B
Retailer 15
-
£652 GBP
View
B
Retailer 16
-
£710 GBP
View
B
Retailer 17
-
£711 GBP
View
B
Retailer 18
-
£747 GBP
View
B
Retailer 19
-
£783 GBP
View
Most Expensive
B
MOH London
LG670445426 · Nov 2
£883 GBP
View
19 more retailers have this diamond
Prices start from £199 GBPSave up to £684 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
£199 GBP