Green and Black Mica Muscovite 12mm Round - 15-16 Inch Shape_Drops however they are not currently

however they are not currently sourced from this region

Polychrome Jasper is considered one of the rarest Jaspers in the world

polished to show off all it's amazing colors

so only a finite amount of rough material remains

ranges in color from light to dark green

Green and Black Mica Muscovite 12mm Round - 15-16 Inch Shape_Drops however they are not currentlyMica 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