Leon Nussbaum's opal and sterling silver treble clef pin/pendant is designed in London, England by our master silversmith. The rainbow sparkle it produces is created by the diffraction of white light through a micro-structure of silica spheres. This piece can be worn together as a pendant necklace, or the treble clef can be removed and worn separately as a pin. Handcrafted exclusively for Uno Alla Volta, from the heart and hands of the artisan. Dimensions- 17.75 inches long, 1.5 inch long pin/pendant, spring ring clasp. Made in England.