A search of Amazon.com turned up the following books on purchasing a diamond ring:
1. Diamond Ring Buying Guide: How to Evaluate, Identify and Select Diamonds & Diamond Jewelry (6th Edition) by Renee Newman
2. How to Buy a Diamond: Insider Secrets for Getting Your Money's Worth (4th Edition) by Fred Cuellar
3. With This Ring : The Ultimate Guide to Wedding Jewelry by Suk Hee Ko
4. Engagement & Wedding Rings: The Definitive Buying Guide for People in Love by Antoinette L. Matlins
5. Before You Buy an Engagement Ring: With a 4-Step Guide for Making the Right Choice by Nancy N. Schiffer
Another book that is supposed to be very good and covers the whole diamond industry is Diamond : A Journey to the Heart of an Obsession by Matthew Hart.
