GIA COLORED STONE CLARITY GUIDE

Type I

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Usually Eye Clean
Aquamarine
Chrysoberyl
Heliodor
Morganite
Smoky Quartz
Spodumene
Tanzanite
Tourmaline (green)
​Zircon (blue)

​Type II

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Usually Included
Amethyst
Ametrine
Andalusite
Alexandrite
Citrine
Garnet
Iolite
Peridot
Ruby
Sapphire
​Spinel
Tourmaline (all except green, red, pink & watermelon)
Zircon (all except blue)

​TYPE III

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Almost Always Included
Emerald
Red Beryl
Tourmaline (red, pink & watermelon)