This ancient sea creature was once the dominant species on Earth, masters of the oceans for 100 million years. These fossils come from Madagascar and the natural spirals are hand carved down to give them greater dimensionality. The unfolding spiral itself is found throughout nature, and is known as the Divine proportion, or mathematically as the Fibonacci series, and is widely used in art, architecture and music. This model comes with stylised tentacles and air bubbles...quite a spin. Look for the Mercurious Ammonite earrings, bracelets and pendants that come in this range.