"Gems and Gemstones" features nearly 300 color images of cut gems, precious and semiprecious stones, gem-quality mineral specimens, and fine jewelry to be unvei

A comprehensive, illustrated identification guide for beginners and serious collectors alike, featuring special color photography of specimens held at the Natur

The scandals, mysteries, and human stories behind the world’s greatest gems are brought to life by the curator of the Smithsonian’s National Gem Collection

These are the most memorable images of animal behaviour from the prestigious Wildlife Photographer of the Year competition. They have been specially selected fo