BK15 Fairburn Agate – The South Dakota Gemstone by Roger Clark.  The purpose of this book is to share the author’s deep appreciation for agates and thereby promote the pleasure and enjoyment of their intrinsic beauty.  For agate collectors who are already intrigued and inspired with the beauty and mysterious origin of agates, this book has all of the latest scientific research.  There is also a proposal for a new theory about the natural processes that affect the genesis of agates in sedimentary environments.

This a new version of an older, well loved edition complete with the author’s signature inside the front cover.