There is a great collection of gems and fossils. Not all of it local but a lot of it is. Some of the stuff is a bit expensive, but it is as close as you can get to taking home something from the dinosaur museum.
We did not spend as much time as we would have liked to in this shop...a treasure-trove of fossils and rocks. I bought a pair of shark-teeth earrings (irresistible), while the others bought other jewelry and stones. Be sure to go downtown to see another huge inventory.