The earliest firm evidence of self-adornment in Africa is the find of an oval bone pendant from Redeyef, Tunisia, which is believed to be 15,000 years old.
Other organic materials such as seeds, nuts and hollow bird bones have been found in the form of tiny beads in a cave on the Njoro River, Kenya.
They date back to around 1000 BC. But the most common earliest-known examples of organic material in African jewellery are beads made from ostrich shells. They are found from north to south and are still made in the Sudan and southern Africa.