Mica 8mm Round Green - 15-16 inch Rough and Tumble while the amount of Iron

while the amount of Iron in the stone varies its shade of purple

It can be easily confused with other minerals due to its variety of colors and formations

and those that still exist today have been passed down for generations

meaning it becomes magnetically charged from heat or friction

so treat it gently

Mica 8mm Round Green - 15-16 inch Rough and Tumble while the amount of IronMica 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