A long, leaf-shaped symmetrical point in pale green glass. The side edges are serrated and finely-worked. Known as a Kimberley point, spearheads such as this one were made from bottleglass using pressure-flaking techniques. In the 16th century, glass bottles began to drift into the northwestern shores of Australia from Portuguese trading posts in Indonesia. Aboriginal Autralians used their existing stoneworking skills to make spear points out of bottleglass, creating fine blades which they traded over long distances.