Obsidian
Obsidian is a natural volcanic glass that forms when lava solidifies so rapidly that mineral crystals do not have time...
Moonstone
Moonstone is a potassium feldspar of the orthoclase (adularia) species with white shimmer, similar to moonshine (therefore the name) adularescence....
Malachite
Malachite is a common secondary mineral with a vivid green color; formed by the gathering of copper deposits, where it...
Lapis lazuli
 Lapis lazuli has an intense, brilliant blue that derives from the presence of the mineral lazurite. Its name derives from...