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Round|Lab Grown|IGI

1.26ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG761551750

Shape and cutting style on the report: Round brilliant

Certificate IGI LG761551750

Diamond specifications and retailer prices

From £129 GBP
As of November 5, 2026
Save £613 GBP (83%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £742 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.26ct lab-grown round diamond

This 1.26ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG761551750 or 761551750. Listed at 17 retailers as of November 5, 2026, with prices from £129 to £742, a £613 spread on the same certified stone. MOH London lists it at £742. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.26
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG761551750
Dimensions7.04 × 7.01 × 4.19 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
7.04 mm7.01 mm1.26 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG761551750
Side View
Table 59.0%Crown 32.9°Girdle: ThinPavilion 41°Culet: NoneDepth 59.7%

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 5
Current: £742 GBP|Low: £123 GBP|High: £752 GBP|Avg: £341 GBP|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 8£129 GBP
Retailer 9£159 GBP
Retailer 2£273 GBP
Retailer 4£280 GBP
Retailer 10£284 GBP
Retailer 6£316 GBP
Retailer 3£351 GBP
Retailer 5£505 GBP
Retailer 7£540 GBP
MOH London£742 GBP

42 data points across 10 retailers

17 retailers£129 GBP to £742 GBP

A
Cheapest Retailer
-
£129 GBP
A
Retailer 2
-
£149 GBP
View
Retailer 3
-
£159 GBP
View
Price last confirmed 12 days ago
A
Retailer 4
-
£159 GBP
View
A
Retailer 5
-
£273 GBP
View
A
Retailer 6
-
£280 GBP
View
A
Retailer 7
-
£284 GBP
View
A
Retailer 8
-
£316 GBP
View
B+
Retailer 9
-
£330 GBP
View
B+
Retailer 10
-
£345 GBP
View
A
Retailer 11
-
£351 GBP
View
B+
Retailer 12
-
£404 GBP
View
B
Retailer 13
-
£505 GBP
View
B
Retailer 14
-
£511 GBP
View
B+
Retailer 15
-
£540 GBP
View
B+
Retailer 16
-
£551 GBP
View
Most Expensive
B
MOH London
LG761551750 · Nov 5
£742 GBP
View
16 more retailers have this diamond
Prices start from £129 GBPSave up to £613 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
1.26ct Round
£129 GBP