This sterling silver pendant features 0.90 ct. t.w. created opal and 0.57 ct. t.w. created white sapphire gemstones, measures 20.35-mm. length x 11.64-mm. width and hangs on an 18-in. length chain. Almost all gemstones have been treated to enhance their color and require special care. Imported Material & Care Created White Sapphire Use silver polishing cloth on silver items.