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We have some great rocks in Oregon. If you ever want to go out rock hunting, this is the book to bring! We have almost every rock hunting book for every state in the country, too.
Idaho is known as the "Gem State" because it contains 72 different kinds of precious and semi-precious stones. The only other location on the planet which has a greater variety of gems is Africa. Idaho's state gem is the star garnet. Throughout the state there are numerous and popular gem-hunting spots where enthusiasts can find deposits of corundum, jasper, agate, opal, garnet, topaz and zircon.