Mica 8mm Round Green - 15-16 inch R1766 which come in a variety

which come in a variety of colors

Once cooled

whose color often caused ancient jewelers to confuse it with Emerald

” meaning “a stream of lava

Due to its color and clarity

Mica 8mm Round Green - 15-16 inch R1766 which come in a varietyMica 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