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Round|Lab Grown|IGI

1.27ct H VS1 Round Lab Grown Diamond

ID • H/VS1 • IGI LG804642940

Shape and cutting style on the report: Round brilliant

Certificate IGI LG804642940

Diamond specifications and retailer prices

From £156 GBP
As of November 3, 2026
Save £616 GBP (80%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £771 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.27ct lab-grown round diamond

This 1.27ct 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 LG804642940 or 804642940. Listed at 18 retailers as of November 3, 2026, with prices from £156 to £771, a £616 spread on the same certified stone. MOH London lists it at £771. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.27
Carat
H
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG804642940
Dimensions6.97 × 6.91 × 4.30 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
6.97 mm6.91 mm1.27 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG804642940
Side View
Table 57.0%Crown 35.6°Girdle: MediumPavilion 40.6°Culet: NoneDepth 61.9%

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 3
Current: £771 GBP|Low: £150 GBP|High: £783 GBP|Avg: £432 GBP|-1.3%
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 5, 2026
Retailer 12£156 GBP
Retailer 13£193 GBP
Retailer 5£332 GBP
Retailer 14£332 GBP
Retailer 10£333 GBP
Retailer 8£352 GBP
Retailer 3£375 GBP
Retailer 2£381 GBP
Retailer 11£467 GBP
Retailer 9£472 GBP
Retailer 7£623 GBP
Retailer 6£659 GBP
Retailer 4£701 GBP
MOH London£771 GBP

29 data points across 14 retailers

18 retailers£156 GBP to £771 GBP

A
Cheapest Retailer
-
£156 GBP
A
Retailer 2
-
£181 GBP
View
Retailer 3
-
£193 GBP
View
Price last confirmed 11 days ago
A
Retailer 4
-
£193 GBP
View
A
Retailer 5
-
£332 GBP
View
A
Retailer 6
-
£332 GBP
View
A
Retailer 7
-
£333 GBP
View
A
Retailer 8
-
£352 GBP
View
A
Retailer 9
-
£375 GBP
View
A
Retailer 10
-
£381 GBP
View
B+
Retailer 11
-
£467 GBP
View
A
Retailer 12
-
£472 GBP
View
B+
Retailer 13
-
£505 GBP
View
B+
Retailer 14
-
£621 GBP
View
B+
Retailer 15
-
£623 GBP
View
B
Retailer 16
-
£659 GBP
View
B+
Retailer 17
-
£715 GBP
View
Most Expensive
B+
MOH London
LG804642940 · Nov 5
£771 GBP
View
17 more retailers have this diamond
Prices start from £156 GBPSave up to £616 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
1.27ct Round
£156 GBP