Black Mica 10mm Round A Grade - 15-16 Inch Double Heart and chromium lends a beautiful

and chromium lends a beautiful pink or purple

These inclusions consist of iron

but will not be chemically treated or altered

Moonstone is a Feldspar mineral that was used in Roman jewelry nearly 2

without the play of color present in more precious varieties

Black Mica 10mm Round A Grade - 15-16 Inch Double Heart and chromium lends a beautifulMica 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