TURQUOISE and CORAL RING Size11 1/2 This ring is made from solid sterling silver and marked on the back by the Navajo artist that made it, R.T.T. The oval turquoise in this ring looks more like opal, it is a beautiful light teal color with a brown matrix. The turquoise and red coral stones are set in saw tooth bezels. The setting is one inch long, 44 grams. A long, detailed leaf and four silver beads are also part of the design. There are no metal marks but it tests as Sterling Silver. Great vintage condition.