Varieties of Quartz

• Agate: Banded chalcedony, translucent.
• Chalcedony: Any of the cryptocrystalline quartz, though generally only utilized for white or lightly colored material.
• Jasper: Opaque chalcedony, impure
• Onyx: Agate, when bands are straight, parallel, as well as constant in dimension.
• Aventurine: Translucent chalcedony with smaller inclusions, mainly in the case of mica, that shimmers.
• Tiger's Eye: Fibrous quartz, showing chatoyancy.
• Rock Crystal: Clear and colorless.
• Amethyst: Purple and see-through.
• Ruby Quartz: Crimson glass-like crystal that attracts great quantities of solar energy.
• Citrine: Yellow to reddish orange and greenish yellow.
• Rose Quartz: Pink, transparent and in some cases shows diasterism.
• Milk Quartz: White, see-through to opaque, in some cases shows diasterism.
• Carnelian: Reddish orange chalcedony, see-through.
• Smoky Quartz: Brown, see-through.
• Morion: Dark brown and opaque.

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