This one-of-a-kind puzzle piece is made from diachronic glass and measures 1 1/2 x 1 x 1/4". It comes on a 16" rubber cord, attached by a lobster clasp. All necklaces arrive individually packaged in a powder blue gift pouch. This necklace was made with lots of love and passion by Melissa Winter's organization, The Puzzling Piece, which raises money for autism awareness and autism research.