Large Botryoidal Natural Raw Grape Agate Chalcedony Cluster Origin: Indonesia Weight: 15.55 ounces Length: 4.4 inches This piece is self standing, and has that gorgeous grape colored purple this mineral is known for! The mine where this mineral is found has been permanently closed due to a volcano erupting. Most likely this mineral does not even exist in this form anymore. 🍇Grape Agate is the name given to the botryoidal Purple Chalcedony that has been recently discovered in Indonesia. So far there has been only one locality found, making this an extremely rare and valuable stone.