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Description

Biotite 6mm Round Orange - 15-16 InchBiotite 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

occuring 10

so treat it gently

It is found only in a four square mile area in a remote mountain range of Chihuahua

according to the Mohs hardness scale

Sometimes called the "Black Prince's Ruby" for its role in the English crown

microcrystalline form of Quartz

Red Jasper is an aggregate of microcrystalline quartz and/or chalcedony and other minerals

Mined in: Madagascar

It was sold in the markets of ancient Babylon in 4

Tourmaline is unusual in that it is both pyroelectric and piezoelectric

Stromatolites date back more than three billion years and are the oldest known fossils

The cabochon you received will not be exactly what is shown in the image