The product is a fossilized Indiana geode quartz crystal agate crinoid calyx weighing 4,825 carats. This unique piece was created through the process of agatization, where the original crinoid calyx was replaced by agate crystals. Made in the United States, this collectible item showcases the beauty and history of Indiana's geological formations. Perfect for collectors of fossils, rocks, and minerals, this piece is a rare and beautiful addition to any collection.