This product is made of natural ammonite fossil.Whole Pendant Size:39x32x13-48x38x13mm,adjustable length: 16-26 inches. Ammonites assist in providing insight to the basis from which to start and allows one to retain the whole picture from conception to use. Ammonite gives stability and structure to ones life. It can help to clear a space, transforming it into a smooth, positive, flowing energy. Each one is unique, vary in color and shape,may has slight difference from the image we provide. Don't forget to check the second picture to see various appearance they may have. And please allow slightly difference in size as it's manually measured. Perfect Gifts Idea -- Perfect for a collection or a healing reiki gift, best gift for Halloween or Christmas present, birthday,New Year.