Biotite 6mm Round Orange - 15-16 Inch Shattuckite6mm These cabochons are all unique

These cabochons are all unique and vary in colors and patterns

Selenite is a crystal formed from the mineral gypsum

Princess Patricia of Connaught

neither a crystal nor a mineral

created when silica hardens within the fissures of other stones

Biotite 6mm Round Orange - 15-16 Inch Shattuckite6mm These cabochons are all uniqueBiotite is a name used for a large group of black mica minerals that are commonly found in igneous and metamorphic rocks. These include annite, phlogopite, siderophyllite, fluorophlogopite, fluorannite, eastonite, and many others. The name "biotite" is used because these minerals generally cannot be distinguished without optical, chemical, or x ray analysis. Biotite was named in honor of the French physicist Jean Baptiste Biot, who performed early