Antoinette Matlins, P.G. is an internationally respected gem and jewelry expert, author, and lecturer. Her books are widely used throughout the world by consumers and professionals in the gem and jewelry field alike. Ms. Matlins’ books include Jewelry & Gems: The Buying Guide (over 300,000 copies now in print–the only book of its kind ever offered by Consumer Reports), The Pearl Book: The Definitive Buying Guide, Gem Identification Made Easy; Engagement & Wedding Rings: The Definitive Buying Guide for People in Love; Colored Gemstones: The Antoinette Matlins Buying Guide; Diamonds: The Antoinette Matlins Buying Guide, and Jewelry & Gems at Auction: The Definitive Guide to Buying & Selling at the Auction House & on Internet Auction Sites.