These Canadian Ammonites are amongst some of the most sought after fossils in the world. Known for their rarity and vibrant colours finding specimens of this scale are few and far between. The opal like iridescence on the outer shell is a gemstone called ‘Ammonite’. Colours of red, green, blue, orange and purple reflect light from every angle transforming the fossils appearance from one position to another. This remarkable gemstone takes millions of years of compression and mineralisation to form.