Bonewitz, Ra

A guide to rocks and minerals, covering over two-hundred seventy profiles of rocks and minerals, photographs, and more than seven hundred examples.

A guide to gemstones with more than four hundred examples, covering the major groups of gems, cut stones, precious metals, and organic gems, and includes illustrated profiles with the key characteristics of each gem.

Explores the Mayan prophecy that the world will experience a cataclysmic event in 2012; and provides an overview of Mayan civilization, culture, religion, and science.

Presents overviews of the universe and Earth's origins, how rocks and fossils are formed, and what minerals are; profiles hundreds of kinds of rocks, minerals, and fossils; and discusses related places and topics such as Stonehenge, Devil's Tower, gem cutting, and the Hope Diamond.