Antoinette Matlins, P.G., is the most widely read author in the world on the subject of jewelry and gems. Her books include Gem Identification Made Easy; Colored Gemstones: The Antoinette Matlins Buying Guide; Diamonds: The Antoinette Matlins Buying Guide; Jewelry & Gems at Auction: The Definitive Guide to Buying & Selling at the Auction House & on Internet Auction Sites; and many more. An internationally respected gem and jewelry expert and a popular media guest, she is frequently quoted as an expert source in print media and seen on ABC, CBS, NBC, and CNN, educating the public about gems and...