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Round|Lab Grown|IGI

1.29ct F VS1 Round Lab Grown Diamond

EX • F/VS1 • IGI LG788620064

Shape and cutting style on the report: Round brilliant

Certificate IGI LG788620064

Diamond specifications and retailer prices

From £139 GBP
As of November 3, 2026
Save £667 GBP (83%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £806 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1.29ct lab-grown round diamond

This 1.29ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG788620064 or 788620064. Listed at 18 retailers as of November 2, 2026, with prices from £139 to £806, a £667 spread on the same certified stone. MOH London lists it at £806. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.29
Carat
F
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.7°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG788620064
Dimensions7.09 × 7.06 × 4.29 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.09 mm7.06 mm1.29 ctF / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG788620064
Side View
Table 56.0%Crown 32.7°Girdle: MediumPavilion 40.9°Culet: NoneDepth 60.5%

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 3
Current: £806 GBP|Low: £139 GBP|High: £816 GBP|Avg: £377 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 4, 2026
Retailer 11£139 GBP
Retailer 13£173 GBP
Retailer 9£297 GBP
Retailer 3£302 GBP
Retailer 2£309 GBP
Retailer 6£317 GBP
Retailer 5£324 GBP
Retailer 4£357 GBP
Retailer 10£378 GBP
Retailer 8£420 GBP
Retailer 7£442 GBP
Retailer 12£504 GBP
MOH London£806 GBP

40 data points across 13 retailers

18 retailers£139 GBP to £806 GBP

A
Cheapest Retailer
-
£139 GBP
A
Retailer 2
-
£161 GBP
View
Retailer 3
-
£173 GBP
View
Price last confirmed 20 days ago
A
Retailer 4
-
£173 GBP
View
A
Retailer 5
-
£297 GBP
View
A
Retailer 6
-
£302 GBP
View
A
Retailer 7
-
£309 GBP
View
A
Retailer 8
-
£317 GBP
View
A
Retailer 9
-
£324 GBP
View
B+
Retailer 10
-
£357 GBP
View
B+
Retailer 11
-
£378 GBP
View
B+
Retailer 12
-
£420 GBP
View
B+
Retailer 13
-
£442 GBP
View
B+
Retailer 14
-
£504 GBP
View
B
Retailer 15
-
£554 GBP
View
B
Retailer 16
-
£594 GBP
View
B
Retailer 17
-
£627 GBP
View
Most Expensive
B
MOH London
LG788620064 · Nov 2
£806 GBP
View
17 more retailers have this diamond
Prices start from £139 GBPSave up to £667 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
1.29ct Round
£139 GBP