how to facet
gemstone main cabochon creation
min data

Mineral: xx
Gem: tourmalated quartz
Size: 13x17 mm
Carat: 8.9 ct
Cut: step cut
Origin: Brazil
Genral 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
Another native cut rock crystal (clear quartz) with imbedded black tourmaline (schorl: mineral name) crystals. In this case the tourmaline crystallized first and was entrapped by later growing quartz crystals. Green and pink tourmalines have also been found embedded in quartz crystals and command far higher prices.

Closeup images below.

closeup of tourmaline crystals in corner of stone closeup of tourmaline crystal that had been cut by a facet.