This ring is unmarked, it has been tested with 14k gold acid with no reaction. I''m calling it 10k just to be on the safe side Beautiful antique filligee setting with floral motif and a beautiful agate stone. Very unusual piece. Similar to other agates and silica rocks, crazy lace agate is a good general healing stone. Crazy lace agate is commonly referred to as the "laughter stone," or "happy lace." It''s a balancing and protecting stone, believed to ward off the "evil eye," bringing joy and absorbing emotional pain.