This is a massive early brooch created in Mexico from sterling silver. The brooch measures 2 3/4 inches wide and 1 inch thick with a large 3/4" x 5/8" genuine amethyst stone in the center. It is simple signed with Mexico Silver which is the silver mark used between the 1920's and the 1940's and is commonly above .925 purity. There is a teeny chip on the corner of the stone but this is unseen to naked eye. The pin backing has a little warp to it but holds great!