Publisher's Synopsis
THE COMPLETE GUIDE TO AGATE
A DEFINITIVE GUIDE TO AGATE IDENTIFICATION, TYPES, AND MAINTENANCE
Agate is also known as code onyx, agate, horse brain, etc. It is a kind of chalcedony minerals, often a striped block mixed with opal and cryptocrystalline quartz, this book on the complete guide on agate give a detailed explanation on how agate is form, types and how to identify an agate stone,