These two books are rare and difficult to find, but are worth the hunt!
AGATES II Book - by Johann Zenz - Bode Publishing Hardback 656 Pages, $300.00. AGATES II was published in 2009 and is the second book of the trilogy AGATES by Johann Zenz published by Bode. It's a hard-back book of 656 pages. The book is in new condition.
Agates: The Pat McMahan Collection. This beautifully illustrated book is a depiction of one of the most comprehensive collections of sagenite, plume, and banded agate in the world as a result of Pat McMahan’s 26 years of intensive rock collecting. More than 1250 stunning photos of the choicest and rarest agates from 20 countries and 19 U.S. states from 300 separate agate deposits are shown. History of many locations, personal stories, prospecting tips, and other great information is found in this book. Bob Jones, Senior Editor of Rock and Gem Magazine states “This text is a must for every agate collector’s library and reference shelf." My copy is like new and signed. This is a first edition, and I have read that this book is now currently out of print. $500