Malachite 12mm Coin 8-Inch 20210723 Shungite has been used as

Shungite has been used as a folk medical treatment since the early 18th century

cream colors and whites

Brazilian Amazonite is an opaque blue to green to light green stone

including lazurite

Tourmaline and Pyrite

Malachite 12mm Coin 8-Inch 20210723 Shungite has been used asMalachite is a copper carbonate with a bright green color and dark green banding. Usually found near copper deposits, it is formed through the combination of carbonated water, limestone and copper. Famous malachite mines in the Ural mountains of Russia once produced 20 ton blocks of the stone, while today it is primarily mined in Africa. Malachite was used extensively as decoration in the palaces of Russian tsars and forms the columns of St. Isaacs