Quartz - Clear
Quartz is the most common mineral known.
In it's crystalline form, Quartz has many varieties including smokey, amethyst, agate and citrine. As these are so popular in their own right, they have their own pages.
This page deals with clear quartz only.
Quartz often forms the inner lining of geodes, with chalcedony or agate forming the outer layer.
Note - Chalcedony is a micro-crystalline form of quartz .
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