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gemstone main cabochon creation
min data

Mineral: quartz
Gem: quartz with oxide garden
Cut: tumbled stones
Origin: Brazil
General Info: The name is derived from the German "quarz" of uncertain origin. It was called "krystallos" by the Greeks, but this later became the generic term for crystal.
Additional Information
This material is often sold under the name of "garden quartz." It is highy included quartz that contains pieces of the cavity in which it likely grew. The materials often include a mixture of metal oxides and sometimes chlorite. There are also sometimes pieces of the cavity material in this case likely rhyolite.

All three of these examples are tumble polished stones and not cabochons.