Malachite 12-17x22-33mm A Grade Medium Free Form Cabochon Amethyst The original stones were often

The original stones were often used as protective amulets and are usually scarred or pitted in places where they were ground off for use in traditional medicines

These gauges are often used to display dimensional information in science & engineering but is convenient for creative use as well

Labradorite is usually gray to green

Jewelry designers use them to determine the size of beads and gems

Originally discovered in the 1940’s and not introduced commercially until 1978

Malachite 12-17x22-33mm A Grade Medium Free Form Cabochon Amethyst The original stones were oftenMalachite 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 to 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