Beads is a small usually round object made of glass, wood, metal,nut,shell, bone, seed pierced for stringing. Among primitive peoples, beads were worn for magical reasons more than for decorative purpose. Hence little variations was allowed in their shapes and materials. Beads range in size from under 1 millimetre (0.039 in) to over 1 centimetre (0.39 in) in diameter. A pair of beads made from Nassarius sea snail shells, approximately 100,000 years old, are thought to be the earliest known examples of jewellery. Beadwork is the art or craft of making things with beads. Beads can be woven together with specialized thread, strung onto thread or soft, flexible wire, or adhered to a surface (e.g. fabric, clay).