Shells are the oldest form of jewellery...and money for that matter. Shell decorations have been found as jewellery in the oldest known burial grounds. Today there are a number of types of shells still being used as ornamental jewelry. Abalone shell is used as decorative items and as a source of mother of pearl for jewellery, buttons, buckles, and inlay. Shell comes in just about every colour of the rainbow so makes for stunning inlays in jewellery.