Sterling silver Stamped on inside and out - please see photos Very minimal wear and tear -was rarely worn, and will come to you completely polished. Diameter is almost 3 inches. Circumstance is about 7.5 inches Will fit 6.5 - 8 inch wrist (mine is 8 inches) Please be sure to check out all of my other listings (eBay, Mercari, Poshmark)! Thank you for checking out my listing! Please be sure to check out all my other items, as I am always happy to accept reasonable offers, and to create bundles for deeper discounts and combined shipping. All questions and offers welcome. Happy shopping!