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Radiant|Lab Grown|IGI

1.22ct E SI1 Radiant Lab Grown Diamond

GD • E/SI1 • IGI LG639463099

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG639463099

Diamond specifications and retailer prices

From €427 EUR
£376 GBP
As of November 5, 2026
1 retailer carries this diamond
Only listing: €427 EUR at Diamond Quarter
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Diamond Quarter

About this 1.22ct lab-grown radiant diamond

This 1.22ct lab-grown radiant sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG639463099 or 639463099. Listed at a single retailer as of November 5, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.22
Carat
E
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.5°
Pavilion angle34.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG639463099
Dimensions7.65 × 5.28 × 3.43 mm
L/W Ratio1.45
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.65 mm5.28 mm1.22 ctE / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG639463099
Side View
Table 68.0%Crown 45.5°Girdle: Slightly ThickPavilion 34.8°Culet: NoneDepth 65.0%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 5

No price history available yet

1 retailer

B
Diamond Quarter
1.22SI1ELG99A7C6N · Nov 5
€427 EUR
£376 GBP
View

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B
1.22ct Radiant
€427 EUR