The Nova is clean and contemporary handcrafted glass. Besa’s easy-to-use bayonet mount secures the glass diffuser to the aluminum fitter with a “twist & lock” action. Besa Lighting white glass is a soft white cased glass that can suit any classic or modern decor. White has a very tranquil glow that is pleasing in appearance. The smooth 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.