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...
Showing 80 species of minerals and gem stones.
This guide provides information on the significance, origin, differentiation...