I like this book. I like it a great deal, but I think there's some major flaws in the text. The author has presented some fairly unique information on stones, which is admirable and interesting. I can't and won't judge the stone knowledge she presents and recognize that her information represents her relationship to stones. My complaint isn't in the channeled information, but the major gaps in the recommendations she makes...
The author's scientific knowledge is lacking because she suggests making gem essences from several stones that are not only inappropriate for essences but stones that are highly toxic and can be dangerous if ingested. I realize that this is a common problem in many metaphysical texts, but I believe that an author assumes a certain amount of responsibility when recommending certain practices to an audience that may know less than the writer. Some research should be done to see if certain stones are appropriate for essences because people's health and well being are on the line.
If you're interested in learning about the energies of stones, this book is useful. However, I would recommend you do some solid research before make essences from many of the stones she recommend because many are extremely dangerous when soaked in water and may make you very sick, or worse.
Authors should consider their responsibility to their readers before recommending practices that can be dangerous and damaging. To do any less is irresponsible, in my humble opinion.
When I was trying to buy crystal books, no reviewers noted their content. This book contains an alphabetical directory of crystals and in-depth information as to their properties. Also astrological stone advice and colour photos. It is very interesting and set me on the road to crystal knowledge.