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Round|Lab Grown|IGI

1.22ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • IGI LG765603203

Shape and cutting style on the report: Round brilliant

Certificate IGI LG765603203

Diamond specifications and retailer prices

From £263 GBP
As of November 3, 2026
Save £456 GBP (63%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £719 GBP at MOH London · As of November 1, 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG765603203 or 765603203. Listed at 10 retailers as of November 1, 2026, with prices from £263 to £719, a £456 spread on the same certified stone. MOH London lists it at £719. 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
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG765603203
Dimensions6.82 × 6.78 × 4.27 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.82 mm6.78 mm1.22 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG765603203
Side View
Table 57.0%Crown 36.2°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 3
Current: £719 GBP|Low: £154 GBP|High: £741 GBP|Avg: £346 GBP|-2.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 4, 2026
Retailer 9£154 GBP
Retailer 3£263 GBP
Retailer 5£272 GBP
Retailer 7£277 GBP
Retailer 8£285 GBP
Retailer 6£340 GBP
Retailer 2£360 GBP
Retailer 4£400 GBP
Retailer 10£438 GBP
MOH London£719 GBP

35 data points across 10 retailers

10 retailers£263 GBP to £719 GBP

Retailer 1
-
£154 GBP
Price last confirmed 12 days ago
A
Retailer 2
-
£263 GBP
View
A
Retailer 3
-
£272 GBP
View
A
Retailer 4
-
£277 GBP
View
A
Retailer 5
-
£285 GBP
View
B+
Retailer 6
-
£340 GBP
View
B+
Retailer 7
-
£360 GBP
View
B
Retailer 8
-
£400 GBP
View
B+
Retailer 9
-
£438 GBP
View
Most Expensive
B
MOH London
LG765603203 · Nov 1
£719 GBP
View
9 more retailers have this diamond
Prices start from £263 GBPSave up to £456 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
£263 GBP