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Round|Lab Grown|IGI

1.22ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG691511756

Shape and cutting style on the report: Round brilliant

Certificate IGI LG691511756

Diamond specifications and retailer prices

From £290 GBP
As of November 5, 2026
Save £592 GBP (67%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £882 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1.22ct lab-grown round diamond

This 1.22ct lab-grown round sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG691511756 or 691511756. Listed at 5 retailers as of November 2, 2026, with prices from £290 to £882, a £592 spread on the same certified stone. MOH London lists it at £882. 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

1.22
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.8°
Pavilion angle40.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG691511756
Dimensions6.96 × 6.95 × 4.11 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
6.96 mm6.95 mm1.22 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG691511756
Side View
Table 60.0%Crown 32.8°Girdle: MED-STKPavilion 40.5°Culet: NoneDepth 59.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 5
Current: £882 GBP|Low: £254 GBP|High: £893 GBP|Avg: £450 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 5£290 GBP
Retailer 4£326 GBP
Retailer 2£343 GBP
Retailer 3£364 GBP
Retailer 6£481 GBP
MOH London£882 GBP

43 data points across 6 retailers

5 retailers£290 GBP to £882 GBP

A
Cheapest Retailer
-
£290 GBP
B+
Retailer 2
-
£326 GBP
View
B+
Retailer 3
-
£343 GBP
View
B+
Retailer 4
-
£364 GBP
View
Most Expensive
B
MOH London
LG691511756 · Nov 2
£882 GBP
View
4 more retailers have this diamond
Prices start from £290 GBPSave up to £592 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
1.22ct Round
£290 GBP