This 14-Karat Gold Tie Tac showcases the glorious play of light in the opal stone at its center. The body of the tie tac is of highly polished 14-karat gold, contrasting with an inner frame of gleaming black onyx. This vivid frame is ideal to bring out the varied colors of the opal inlay. With a size of 3/8 inches, this bold tie tac will pin your tie in place with panache.