It helps you understand what crystals are. How to recognize the ones you already have. How to clean and program the minerals, too. It also includes reference pages that detail what stone(s) is best for particular illnesses or situations.
Have gone through tons of crystal books, but this is my favorite with its full color photos. The crystals are shown in both their rough and polished state, which is a major plus. Because this is an older book, it can be found anywhere from Barnes and Noble to Thrift Books.
I found my copy at Goodwill, but there are still new copies at Amazon. Keep your eyes open at the upcoming yard sales, too. It is a book that is well worth owning. Its easy to read content and illustrations make it appropriate for ages seven and up.
Two thumbs up for Judy Hall who went on to write much more detailed crystal books.