Natural Chrysocolla is a hydrated copper silicate mineral known for vivid blue, turquoise-green and green coloration. It commonly occurs with Malachite, Azurite, Quartz and Chalcedony and is valued for mineral specimens, pendants, cabochons, beads and ornamental jewelry. Gem Silica, or Chrysocolla Chalcedony, is a distinct harder gem material containing microscopic Chrysocolla inclusions within Chalcedony.