Treasures of the Earth From the author of Collecting Rocks, Gems and Minerals and one of the leading agate collectors in the world, comes this comprehensive gui

Jasper is a beautiful stone, and the variation is enough to make any collector excited. When you’re diving into the world of rock collecting, they’re a grea

Illustrated throughout with photographs of these wonderfully colourful minerals. Accompanied by a text from a well-known expert in the field, the book includes