This sterling silver ring features 4.00 ct. t.w. cushion shaped green amethyst with 1/10 ct. t.w. diamond and measures 20.70-mm. x 12-mm. Almost all gemstones have been treated to enhance their color and require special care. Shared prong setting 1 Green Amethyst and 24 Diamonds Color G-H-I Clarity I3 Imported Care Clean with a soft bristle brush and warm soapy water. Use silver polishing cloth on silver items.