Black Mica 10mm Round A Grade - 15-16 Inch Double Heart These inclusions consist of iron

These inclusions consist of iron

Peter the Great set up Russia's first spa in Karelia to make use of the water purifying properties of shungite

golden tan

The name derives from the recurring chevron or “dog teeth” pattern of the stripes

mother of pearl

Black Mica 10mm Round A Grade - 15-16 Inch Double Heart These inclusions consist of ironMica 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