Druzy jewellery. Druzies are created by a natural process that forms tiny crystals on a matrix surface. The beauty of druzy comes from the sparkle of these crystals. Druzies are beautiful in their own right, but they are often enhanced in a chemical process called Chemical Vapour Deposition in which the druzies are exposed in a gaseous environment that contains a metal like titanium. During the process the metal bonds on a molecular level with the mineral resulting in a spectacular rainbow of colours.