At TIONEER, we use surgical grade stainless steel for our massive selection of metal jewelry. Surgical grade stainless steel is abundant in our collection due to its hard body, incredible resistance to corrosion and tarnish. Stainless Steel Crescent Hamsa Hand of Fatima Geometric Pattern Step-Down Biker Style Polished RingSurgical Grade Stainless SteelEngraved Crescent Hamsa Hand of Fatima DesignApprox. Top Dimension: 0.63 inch x 0.57 inch (16 mm x 14.5 mm)Standard Fit WearPolished Finish Style