ICL NOMENCLATURE
GEM DESCRIPTIONS
Unlike in the diamond industry – where the GIA has created a universally accepted and used grading system – in the colored gemstones world, each gemological laboratory has so far used different nomenclatures for describing the quality factors of colored gemstones and there has never been a uniform and globally accepted terminology.
GEM DESCRIPTIONS
Unlike in the diamond industry – where the GIA has created a universally accepted and used grading system – in the colored gemstones world, each gemological laboratory has so far used different nomenclatures for describing the quality factors of colored gemstones and there has never been a uniform and globally accepted terminology.
GEM GRADING
ICL has developed its own complete system to grade the quality factors of colored gemstones, in a digestible and consumer friendly way.
Our system includes:
Classification of colors into 21 primary and secondary hues Color grading divided into 7 different color intensities Clarity grading divided into 5 different grades
GEM GRADING
ICL has developed its own complete system to grade the quality factors of colored gemstones, in a digestible and consumer friendly way.
Our system includes:
- Classification of colors into 21 primary and secondary hues ;
- Color grading divided into 7 different color intensities ;
- Clarity grading divided into 5 different grades ;
Photography and Videos
Today more than ever, as more businesses display their gemstones online, it is very important to have a set of high quality, accurate images and videos with your stone.
Photography and Videos
Today more than ever, as more businesses display their gemstones online, it is very important to have a set of high quality, accurate images and videos of your gemstone.
ICL CLARITY GRADES
Clarity in colored gemstones is assessed mostly with the unaided eye at a distance of about 40cm. ICL classifies all colored gemstones clarity in 6 different grades.
Eye Clean 1 (EC1) : Free of inclusions while looking with the unaided eye and very few inclusions visible while looking with a loupe. This is considered the finest clarity for coloured gemstones. Potential other names : Top eye clean, Very minor inclusions, Very very slightly included VVS.
Eye Clean 2 (EC2) : Free of inclusions while looking with the unaided eye.
Potential other names : Eye clean, Minor inclusions, Very slightly included (VS).
Visible Inclusions 1 (VI1) : Inclusions very slightly visible with the unaided eye.
Potential other names : Slightly Included (SI).
Visible Inclusions 2 (VI2) : Inclusions slightly visible with the unaided eye.
Potential other names : Moderately Included (MI).
Included 1 (I1) : Inclusions highly visible with the unaided eye.
Included 2 (I2) : Inclusions very highly visible with the unaided eye.
ICL CLARITY GRADES
Clarity in colored gemstones is assessed mostly with the unaided eye at a distance of about 40cm. ICL classifies all colored gemstones clarity in 6 different grades.
- Eye Clean 1 (EC1): Free of inclusions to the unaided eye and very few inclusions visible while looking with a x10 power loupe. This is considered the finest clarity for colored gemstones.
- Eye Clean 2 (EC2): Free of inclusions to the unaided eye.
- Visible Inclusions 1 (VI1): Inclusions very slightly visible to the unaided eye.
- Included 1 (I1): Inclusions highly visible to the unaided eye.
- Included 2 (I2): Inclusions very highly visible to the unaided eye.