The Indian sub-continent has the longest continuous legacy of jewellery making anywhere. While Western traditions were heavily influenced by waxing and waning empires, India enjoyed a continuous development of art forms for some 5000 years. One of the first to start jewellery making were the peoples of the Indus Valley Civilization. By 1,500 BC the peoples of the Indus Valley were creating gold earrings and necklaces, bead necklaces and metallic bangles. Before 2,100 BC, prior to the period when metals were widely used, the largest jewellery trade in the Indus Valley region was the bead trade. Beads in the Indus Valley were made using simple techniques. First, a bead maker would need a rough stone, which would be bought from an eastern stone trader. The stone would then be placed into a hot oven where it would be heated until it turned deep red, a colour highly prized by people of the Indus Valley. The red stone would then be chipped to the right size and a hole drilled through it with primitive drills. The beads were then polished. Some beads were also painted with designs. This art form was often passed down through family; children of bead makers often learnt how to work beads from a young age.