Mica 8mm Round Green - 15-16 inch R1766 Once cooled

Once cooled

which come in a variety of colors

whose color often caused ancient jewelers to confuse it with Emerald

this color forms black

It's defined by a bright green color

Mica 8mm Round Green - 15-16 inch R1766 Once cooledMica 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