STONE GARDEN LARGE AMMONITE FOSSIL ORNAMENTReconstituted Stone Garden Large Ammonite Fossil Ornament Hand crafted by ourselves using crushed limestone, is guaranteed frostproof & has been treated in order to achieve an aged appearance. The ammonite is approx. 20" long. Weight approx 22kg. In medieval Europe, fossilised ammonites were thought to be petrified coiled snakes, and were called "snakestones" or, more commonly in medieval England, "serpentstones". They were considered to be evidence