The use of shells and beads made from bird's eggs, land snails, molluscs and sea shells is probably one of the oldest forms of decorative needlework and still used today. Sixty-five small mollusc shells (Nassarius Kraussianus), perforated with a bone tool, were found in 2004 in Blombos Cave (South Africa). They may have been strung together into necklaces or bracelets and are dated to c. 70,000 to 75,000 years ago.