Inspired by Dan R. Lynch and the popular Rocks & Minerals Identification Guides, this gorgeous deck of playing cards features professional photographs of 52 of the most common and sought-after specimens found in the USA. Each card depicts full-color photographs of such rocks as basalt, granite, and sandstone, as well as minerals like copper, gold, and silver—so you can begin to learn what 52 different rocks, minerals, and gemstones look like.