One Light Pendant from the Cierro collection in Bronze finishCierro is a softly tapered narrow cylinder, creating a refined contemporary look. Our Opal glass is a soft white cased glass that can suit any classic or modern decor. Opal has a very tranquil glow that is pleasing in appearance. The smooth satin finish on the clear outer layer is a result of an extensive etching process. This blown glass is handcrafted by a skilled artisan, utilizing century old techniques passed down from generation to generation.