Did you ever find an interesting, or pretty, rock speciman and wonder what it REALLY is? Well, if you have, this book is for you! The color pictures of rough rock/mineral examples are a treasure to those of us new to rock identification. The photos are sorted by color, which makes great sense. These color plates are easy to access as the pages are black in background (as opposed to the white of regular pages) so one can flip right to the color plates. Under each photo is the name, and corresponding page number where one can find the information pertaining to the piece. Information pages have the proper names, and a multitude of information regarding the rock/mineral, including areas one is most likely to locate the speciman. The field guide also contains a short guide to mineral identification, talking about the various elements that can help one to positively identify the rock or mineral. Remember earth science? Well, if you don't have total recall, no problem. This guide also has sections that can reintroduce you to the fundamentals of igneous, sedimentary or metamorphic rocks. This guide is a must have for beginners in rock collecting or identification. It can supply the simple to the more complex in easy to read and understand language. This book is also heavily cross-referenced so it is hard NOT to find what you are searching for! The book size is handy for taking out into the field, and the vinyl-type cover helps protect the book from wear and tear. I must confess I got much more from the book than I anticipated and it has become one of my favorite field guides.