According to the American Gem Trade Association, ammolite is one of the world’s rarest gemstones. Ammonite fossils have been found across the globe, but the gemstone variety has so far only been ...

The fossilised remains of ammonites were given the name snakestones in England because they resemble coiled snakes turned to stone. Museum palaeontologist Dr Paul Taylor, who has an interest in fossil ...

Based on the fossil record, ammonites came in a wide range of sizes and shapes, from smaller than an inch to as large as nine feet wide. Some ammonites had long, straight shells, while others had ...