Crystal This listing is for ONE (1) Ammonite Fossil. (RK26B22) This is a whole ammonite that has been polished and has gorgeous coloring and patterns. STOCK PHOTO. Each ammonite will vary slightly in size and in characteristics. Amazing piece has hues or dark brown, black and white. The measurement of these ammonites is approx.:49-60mm x 12-25mm x 39-51mm Ammonite is a fossil of protection, associated with the root chakra. It helps with grounding, balance and stability. It can be used in Feng Shui to stimulate the life force "chi". Ammonites are recommended to put in the house to attract prosperity and wealth. The spirals in Ammonites is thought to draw off negative energy.