Contains descriptions and photographs of approximately six hundred minerals, rocks, and meteorites, providing information about the history, origin, structure,
Improve your life on all levels--mentally, physically, emotionally, and spiritually--with this essential reference guide to 160 easily-procured crystals, minera
Unearth a treasure trove of knowledge on over 130 gemstones from around the world. Learn how gemstones are formed and how to recognize them by their unique qual