GIA Clarity Types for Colored Gemstones
There is no universally accepted standard for grading the clarity of colored gemstones. Although the GIA colored stone clarity grading system is a notable attempt to address the issue, it is still the subject of a great deal of discussion and debate.
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Type 1 |
Gemstones that are normally found to be clean. |
VVS |
minute to not detectable |
VS |
minor |
SI1 |
noticeable to obvious |
SI2 |
obvious to prominent |
I1 |
prominent moderate affect on appearence or durabilit |
I2 |
prominent severe affect on appearence & durability |
I3 |
prominent severe affect on beauty, transparency & durability |
Type 2 |
Gemstones that normally may have a few inclusions. |
VVS |
minor |
VS |
noticeable to obvious |
SI1 |
noticeable to obvious |
SI2 |
obvious to prominent |
I1 |
prominent moderate affect on appearence or durability |
I2 |
prominent severe affect on appearence & durability |
I3 |
prominent severe affect on beauty, transparency & durability |
Type 3 |
Gemstones that normally do not come clean. |
VVS |
noticeable to obvious |
VS |
noticeable to obvious |
SI1 |
obvious to prominent |
SI2 |
obvious to prominent |
I1 |
prominent considerable affect on appearence or durability |
I2 |
prominent severe affect on transparency or durability |
I3 Type 3 |
prominent severe affect on beauty, transparency & durability |
Declasse |
stones not transparent because of inclusions |
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