Steps on the Stone Path (book)

Is anyone here familiar with the book "Steps on the Stone Path: Working with Crystals and Minerals as a Spiritual Practice" by Robert Sardello? It seems to be very different from the general crystal and stone books that just list metaphysical qualities and how to use them.

http://www.amazon.com/gp/product/1556438982/ref=ord_cart_shr?ie=UTF8&m=ATVPDKIKX0DER