Jewelry Design Naja Serpent Man Ring by Marcelo Lopes Design This ring for man was inspired by several meaningful elements for law school graduates. Far from being a traditional college ring, Naja serpent ring is a handmade piece. Manufactured in 18k yellow, white and black gold, with ruby cabouchon and diamonds.With a set of symbols represented by the square, the ring never closes itself, the cabouchon ruby, the movement in the swiveling diamonds, the naja serpent and the straight lines representing life and its pathway.