Mineral formation often called bubble calcite due to its botryoidal or spherical shape. Composed of sand aggregates bound together by measures 6 3/4" x 4.5 . See pictures, no refunds given.Condition Information: It is the responsibility of the buyer to obtain all possible information prior to bidding. If you are not completely satisfied with an item before you bid, DO NOT BID. All items are sold "AS IS" "WHERE IS" with any and all faults. Any condition statement is given as a courtesy to a client, is only an opinion & should not be treated as a statement of fact. Seminole Estate Auction shall have no responsibility for error or omission. ALL SALES ARE FINAL, NO REFUNDS, RETURNS, EXCHANGES OR REFUSALS. Your bid signify that you have examined the items as fully as you desire, or that you have chosen not to examine the item. Terms of Guarantee: Each lot will be sold as is, where is with all defects & faults. NO warranties or guarantees of any kind will be given by Seller or Seminole Estate Auction including any warranty of fitness, merchantability or suitably. Bidders should whenever possible carefully inspect each lot to determine condition and contests. Bidders acknowledges that all lots were available for inspection prior to Auction and that he or she replied solely on their own inspections of the lots and not on any information provided by Seminole Estate Auction. It is the responsibility of the buyer to obtain all possible information prior to bidding. If you are not completely satisfied with an item before you bid, DO NOT BID.