Anyone who enjoys rocks, minerals, and gems will love these cards for playing your favorite games or to use as flashcards. Inspired by the popular Agates of Lake Superior book by Dan R. Lynch and Bob Lynch, this gorgeous deck of playing cards features beautiful photographs of 13 of the most popular and well known varieties of the coveted gemstone found in the Great Lake states of Michigan, Minnesota, and Wisconsin. Each card depicts photographs of such agates as the Floater Agate, Fortification Agate, Eye Agate, and more—so you can begin to learn what 13 different specimens look like.