دانلود کتاب Collecting Rocks, Gems and Minerals: Identification, Values and Lapidary Uses

Unlike the dense and highly technical academic tomes that are text-heavy, poorly organized and intimidating, this colorful and easy-to-use reference guide dedicated to collecting rocks, gems and minerals is ideal for readers who want to expand their understanding without getting lost in a labyrinth of science. Beautifully illustrated with 700 color photographs providing wonderful detail and smartly organized to take the hassle out identification, you will enjoy the simplicity of the guide and the enthusiasm and knowledge of author Patti Polk, one of the top agate collectors in the world and a self-proclaimed «rockhound.» You will also enjoy two areas that our competitors dont bother with. First it includes values, and second, it covers an introduction to lapidary, which is the cutting and polishing of rocks and gemstones for jewelry or display.