Blue Biggs Jasper stone. Blue Biggs Jasper is a silicated volcanic ash. It was formed during a volcanic eruption and is part of a Miocene series of rocks called the John Day Formation, near Biggs, Oregon, USA. It is a decorative stone used for jewellery and trinkets.
An abalone is a very large sea snail. Abalones are a different shape to most snails - they have a wide, flat shell. You can still see the spiral shape in their shell. Abalones are caught and eaten as food, and their shells are used to make jewellery.