A genuine fossil ammonite from Russia that has naturally turned to pyrite! I hand cut and polished one face and left a natural face. Has a hole so it can be worn as a donut style pendant. 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!