Mica 6mm Round Green - 15-16 inch 16-inch Strands shiny black with a golden

shiny black with a golden sheen

It is a form of Chrysoberyl

in 315 BCE

Australian Butter Jasper is a relatively new variation of Jasper that definitely meets that criteria

Mica 6mm Round Green - 15-16 inch 16-inch Strands shiny black with a goldenMica 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