This is a lovely antique bull's eye agate. It is set nicely on a brass background with two small holes to the rear. The stone is nicely polished and domed and in very nice antique condition, perfect for new purposing. It measures 0.6 inches across.
As a vintage or antique item, it will show signs of wear and patina.
Please look at the photos carefully and please do ask any questions, I am happy to help.
