Our dinosaur bone has been featured in this beautifully photographed book "Agates Inside Out". Agates Inside Out by Karen A Brzys Photography by Thomas Shearer This comprehensive book helps readers to think like an agate so they can be more successful in finding them. The book features photographs taken by Thomas P. Shearer. He uses innovative techniques that have never before been employed to take pictures of minerals. Also included are helpful diagrams that illustrate how agates formed.