Sterling Silver Cocktail Ring with Green CZ Stones - Sterling Silver Emerald Ring for Women Made with 925 Sterling Silver with Rhodium Plating to prevent tarnish. Stones are AAA grade cubic zirconia stones. They are prong set (not glued). Center Stone: 10 mm (0.40 inches) Stone: Emerald and Clear CZ Gift wrap options available at checkout for under $0.99.