Showing 80 species of minerals and gem stones.
Collecting fossils continues to be a popular hobby
Discover and confidently identify lazurite, granite and more than 350...
Bernhard Bruder, Michael Gienger
All common minerals and precious stones are listed from A-Z in this book.
The first detailed practical guide shows how we use the powers of healing...
This guide provides information on the significance, origin, differentiation...