Arizona Turquoise Ring This handmade ring features a 7mm x 5mm American Mined™ Arizona Turquoise stone, bezel mounted on a 1.6mm wide 925 Sterling Silver Beaded pattern band. Oxidized to a Vintage Silver finish. Ring sizer included. Shipped in gift box. With the Sleeping Beauty mine long closed, American Mined™ Arizona Turquoise, mined in nearby Arizona regions, offers the same classic sky-blue hue and minimal matrix. Turquoise is one of the birthstones for December.