I just picked this gorgeous Art Nouveau Necklace up at an Estate Sale. The clasp is marked with 3 hallmarks, one of them being the #3 and one inside a diamond shape which looks like FF (not sure) the last one looks like a very stylized J, maybe. The stones are green and I am not sure of what type of stones they are. The gold tests positive for 14k. Does anyone know the maker of this piece. Thanks in advance.