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Round|Lab Grown|IGI

1.22ct F SI2 Round Lab Grown Diamond

ID • F/SI2 • IGI LG515227577

Shape and cutting style on the report: Round brilliant

Certificate IGI LG515227577

Diamond specifications and retailer prices

From £233 GBP
As of November 5, 2026
Save £867 GBP (79%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,100 GBP at MOH London · As of November 5, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG515227577 or 515227577. Listed at 12 retailers as of November 5, 2026, with prices from £233 to £1,100, a £867 spread on the same certified stone. MOH London lists it at £1,100. 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
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG515227577
Dimensions6.91 × 6.94 × 4.19 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
6.91 mm6.94 mm1.22 ctF / SI2
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateIGI LG515227577
Side View
Table 59.0%Crown 34°Girdle: MediumPavilion 41.1°Culet: NoneDepth 60.5%

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 5
Current: £1,100 GBP|Low: £233 GBP|High: £1,109 GBP|Avg: £536 GBP|-0.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 10£233 GBP
Retailer 9£250 GBP
Retailer 8£251 GBP
Retailer 6£374 GBP
Retailer 7£409 GBP
Retailer 5£482 GBP
Retailer 11£491 GBP
Retailer 2£518 GBP
Retailer 4£532 GBP
Retailer 3£747 GBP
Retailer 12£766 GBP
MOH London£1,100 GBP

21 data points across 12 retailers

12 retailers£233 GBP to £1,100 GBP

A
Cheapest Retailer
-
£233 GBP
Retailer 2
-
£250 GBP
View
Price last confirmed 12 days ago
B+
Retailer 3
-
£251 GBP
View
B+
Retailer 4
-
£374 GBP
View
B+
Retailer 5
-
£409 GBP
View
B
Retailer 6
-
£482 GBP
View
B
Retailer 7
-
£491 GBP
View
B
Retailer 8
-
£518 GBP
View
B
Retailer 9
-
£532 GBP
View
B
Retailer 10
-
£747 GBP
View
B
Retailer 11
-
£766 GBP
View
Most Expensive
B
MOH London
LG515227577 · Nov 5
£1,100 GBP
View
11 more retailers have this diamond
Prices start from £233 GBPSave up to £867 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
£233 GBP