Natural Royston Turquoise Ring Size 12 by Derrick Gordon. This is a beautifully detailed handmade natural Royston turquoise ring by Navajo artist, Derrick Gordon. Very well known for his expertise in silversmithing, Derrick has set this turquoise gem in a handmade saw tooth bezel and has adorned the sides with his applique and repousse, 13/16" by 9/16". The ring is 1 1/16" at front and center tapering to 1/8" at the ring shank. Nicely shaped on interior for comfort fit. Beautiful quality.