up for auction is a beautiful vintage Avon brooch.it is perfect size not too big.it is 1 3/4 inch.it contains 6 beautiful amethyst color stones.i do not know anything about the gold or the stones but it is made very good.the older jewelry was made to last as this one has.if you like vintage pins you will love this one.the pictures do no justice to his pin.i have pictures of front and back.it is marked.