This is actually a Vintage Glass Button embellished with a brass flower, Sterling Silver and 18k Gold. The Gemstone is Amazonite with 18k Gold Mountains. The clasp is handmade embellished on both sides so if it rolls it still looks good. The stone is a Citrine. There is a crystal added to balance the clasp. The back also has a vintage style peacock to complete the piece. 18" chain.