This beautiful Sterling Silver Ring showcases the spectacular Green, Blue and Yellow hues of Sonoran Gold Turquoise from Mexico.. Ring Width: 7/16"; Shank Width: 1/8" The ring is designed by David Rosales, one of the finest contemporary Southwest Artists in the world. He is the founder and co-owner of Supersmiths, Inc. of Gallup, NM. Each ring is custom made and carries a lifetime guarantee. .