This stunning amethyst brooch is, approximately, 50 carats. It is framed in 18K gold and sterling. The filigre is sterling and the rest is 18K gold. The piece is not marked, however, it has been tested twice and we guarantee it to be as we represent it!! The stone has wonderful brilliance and no scratches. Overall condition is superb. The brooch is 1 3/4 inches long and 1 1/4 inches wide. The stone, itself, is 1 3/8 inches X 7/8 inches.