I first came across this book in the library years ago, and was hooked solely on the pictures. Fast forward to a few weeks ago, and I bought it, remembering the pictures. This time, I actually read it through, having a better idea about jewelry. This book is good for a beginner, because it talks about how rubies and sapphires are chemically the same but the color gives them different names, and the special qualities of rubies, sapphires, and emeralds. I own many Colombian emeralds that belonged to my Colombian grandmother, so I was able to turn around and look at pieces I own, and understand the context of the book. I also learned the wonderful qualities of these popular colored stones, from cuts, to acceptable clarity, and valuble color variations. For someone who wants something easy to read, easy to understand, and has fabulous pictures, I would recommend this book.