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 Freemasons Masonic Eye of Providence Chevron Pattern Biker Style Polished Ring Surgical Grade Stainless Steel Engraved Freemasons Masonic Eye of Providence Design Approx. Top Dimension: 0.59 inch x 0.59 inch (15 mm x 15 mm) Standard Fit Wear Polished Finish Style