Pebbles collected from different beaches. Ideal for Aquariums, succulents pots, and artwork. They are of different sizes, shapes and natural colours. As I am moving I am selling all my collections. The pebbles come in a clear view plastic container. The single one shown separately is a hollow stone. out of curiosity my son broke it to see the inside part and later he kept some bead/stone and closed it 40 years back. if you shake it you can hear the sound of the object rolling inside.