All of the geodes on this page are opened matching pairs mined exclusively by Geode Gallery, LLC near Keokuk, Iowa. While most of these opened geodes are lined with quartz, please see the item description for more details on each specimen. Please visit our Wholesale page for quantity purchasing (businesses/re-sellers with documentation only). For bulk purchases of opened smaller geodes, please visit our Bulk Keokuk Geode Flats page.