I always buy this style ring when I can get them. I've had citrine, and emeralds, with the pearl surround in this style, but nothing is any nicer than this foiled amethyst. It is unmarked, but I tested it with my new gold tester, and it measured between 13 and 14 carat gold. The ring is a size 7, and it has a lovely split shank. The top of the ring measures 1/2 inch East to West, and about the same East to West. The ring weighs 3.44 grams, and it is circa 1800.