RETIRED James Avery Sterling Silver Dakota Ring with Turquoise Stone Size 7RETIRED James Avery Sterling Silver Dakota Ring with Turquoise Stone. Ring Size 7.0. Top Size: 7/8″ x 11/16″. Weight: 8.7 Grams. This Ring is in excellent condition. Stone looks fantastic with no damage. The “ster” or “925″ portion of the hallmark has worn.