This is gold over brass or aluminum book chain necklace with small turquoise stones on one side of locket and a place for a picture or a lock of hair on otherside. Overall condition is very good, maybe needs a bit of cleaning but I would want a professional to do it. I would wear it just the way it is . . . . only wish I knew the history on this beautiful piece. The chain is 17” in length with the locket almost 2” x 1”.