Marcasite is a mineral with a crystal structure. Made of iron sulphide, marcasite is also referred to as white iron pyrite. The more commonly available forms of marcasite include metallic pale brass-yellow coloured crystals that might be tabular or pyramidal in shape. These crystals could also be globular or reniform with a radiating internal structure. Marcasite occurs worldwide. It is also easily found in the chalk near Dover, Folkestone, as well as on the French side of the English Channel. Marcasite is used in the making of a wide range of jewellery items like necklaces, brooches, watches, earrings, pendants and bracelets, etc. Additionally, Marcasite is also extensively used in watches. A lot of Art Deco jewellery was also made out of marcasite. This mineral is often used in the making of imitation diamonds. During the Victorian and Edwardian eras, marcasite was used quite extensively. Nowadays, marcasite jewellery is also used as costume jewellery as well as to lend that classic vintage look. In fine jewellery, marcasite is usually hand-set with grains or beads of metals from the setting being pushed over the edges of the stones. Additionally, jewellery with inlaid marcasite stones along with other precious materials like pearl, agate, shell, onyx, enamel and pearls are also available.