6.4 lbs. of Fossil Gravel in bulk. Our best-selling product, Fossil Gravel is a portable fossil hunt- it consists of 5-15 million year old phosphate pebbles from the Bone Valley area of central Florida. The gravel is loaded with real fossils such as shark teeth, stingray and fish fossils plus bones and teeth from ice-age land mammals. Simply spread a small amount out on a paper plate and carefully search for fossils. Fun and educational, you’ll be amazed what you find. Great gift/activity for all ages. Comes with identification chart and instructions. Postage included in USA.