Black Mica 10mm Round A Grade - 15-16 Inch Double Heart without the play of color

without the play of color present in more precious varieties

but will not be chemically treated or altered

Azurite is a soft

Shiny and sparkling at the same time

These inclusions consist of iron

Black Mica 10mm Round A Grade - 15-16 Inch Double Heart without the play of colorMica 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