Green and Black Mica Muscovite 12mm Round - 15-16 Inch FEATURE03312022 A particularly soft stone

A particularly soft stone

its brilliant color comes from the presence of very small inclusions of Nickel compounds

Apatite can exhibit chatoyancy — an uncommon optical phenomenon in some stones that resembles the light reflection of a cat’s eye

in striking patterns

though it also can occur in dark brown and golden colors

Green and Black Mica Muscovite 12mm Round - 15-16 Inch FEATURE03312022 A particularly soft stoneMica 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