Malachite 6mm Round 8-Inch Uruguay and USA the second-hardest mineral next to

the second-hardest mineral next to diamond

Moroccan Agate occurs in striking colors of red

Ruby was valued more highly than any other gem

A cryptocrystalline Chalcedony

Malachite 6mm Round 8-Inch Uruguay and USA the second-hardest mineral next toMalachite 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