Green and Black Mica Muscovite 12mm Round - 15-16 Inch Shape_Drops Known as a powerful grounding

Known as a powerful grounding stone

so only a finite amount of rough material remains

as Obsidian can be formed into a blade many times sharper than steel surgical blades

however they are not currently sourced from this region

usually in white on hues of brown

Green and Black Mica Muscovite 12mm Round - 15-16 Inch Shape_Drops Known as a powerful groundingMica is a mineral name given to a group of minerals that are physically and chemically similar. They are all silicate minerals, known as sheet silicates because they form in distinct layers. Micas are fairly light and relatively soft, and the sheets and flakes of mica are flexible. Mica is heat resistant and does not conduct electricity. There are 37 different mica minerals. The most common include: purple lepidolite, black biotite, brown phlogopite