A 1,000-pound geode, mosasaur skeleton, and head to auction

Bidding in Heritage's Nature & Science Auction begins on December 2. This amethyst geode weighs 1,933 pounds and is 44 inches long. Breakthroughs, discoveries, and DIY tips sent every weekday. Fossils, purple geodes, and more are hitting the auction block during Heritage's Nature & Science Auction on December 2. "This is an exceptional event, with every lot from the same consignor," Craig Kissick, Heritage's Vice President of Nature & Science said in a statement . "Collections like this, with this level of both quality and variety, rarely reach the collecting market. From fossils to meteorites, and minerals to lapidary arts, this auction has treasures that will appeal to collectors of all kinds."