A genuine fossil ammonite from Russia that has naturally turned to pyrite! This had a natural hole that had broken open in the center, which I left as it is, so it can be worn as a donut style pendant. Just add a leather cord, silk ribbon, or chain of your choice! (NOT INCLUDED). Could also be worked into another piece of jewelry or just enjoyed as a specimen or altar stone. Measurements are shown in the listing title. Feel free to check out all the items in my DVHdesigns Handmade Storefront and there you can contact me with general inquiries or about a custom order. Thanks for shopping DVHdesigns!