CaratHunter
Plans
Round|Lab Grown|IGI

1.29ct H VS1 Round Lab Grown Diamond

ID • H/VS1 • IGI LG811646758

Shape and cutting style on the report: Round brilliant

Certificate IGI LG811646758

Diamond specifications and retailer prices

From £158 GBP
As of November 3, 2026
Save £568 GBP (78%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £788 GBP at MOH London · As of October 29, 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 H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG811646758 or 811646758. Listed at 18 retailers as of November 3, 2026, with a 360% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.29
Carat
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811646758
Dimensions6.99 × 6.96 × 4.30 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.99 mm6.96 mm1.29 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811646758
Side View
Table 56.0%Crown 35.3°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 61.7%

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: £788 GBP|Low: £158 GBP|High: £794 GBP|Avg: £450 GBP|+0.5%
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
Retailer 14
November 4, 2026
Retailer 11£158 GBP
Retailer 13£196 GBP
Retailer 14£336 GBP
Retailer 10£338 GBP
Retailer 5£342 GBP
Retailer 8£356 GBP
Retailer 3£378 GBP
Retailer 2£385 GBP
Retailer 12£474 GBP
Retailer 9£479 GBP
Retailer 7£631 GBP
Retailer 6£668 GBP
Retailer 4£711 GBP
MOH London£788 GBP

31 data points across 14 retailers

18 retailers£158 GBP to £726 GBP

A
Cheapest Retailer
-
£158 GBP
A
Retailer 2
-
£183 GBP
View
Retailer 3
-
£196 GBP
View
Price last confirmed 11 days ago
A
Retailer 4
-
£196 GBP
View
A
Retailer 5
-
£336 GBP
View
A
Retailer 6
-
£338 GBP
View
A
Retailer 7
-
£342 GBP
View
A
Retailer 8
-
£356 GBP
View
A
Retailer 9
-
£378 GBP
View
A
Retailer 10
-
£385 GBP
View
A
Retailer 11
-
£474 GBP
View
A
Retailer 12
-
£479 GBP
View
B+
Retailer 13
-
£513 GBP
View
B+
Retailer 14
-
£629 GBP
View
B+
Retailer 15
-
£631 GBP
View
B+
Retailer 16
-
£668 GBP
View
B+
Retailer 17
-
£726 GBP
View
Most Expensive
MOH London
LG811646758 · Oct 29
£788 GBP
View
Price last confirmed 7 days ago
17 more retailers have this diamond
Prices start from £158 GBPSave up to £568 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
£158 GBP