Diamonds, Diamond Engagement Rings and Jewelry - Diamond.com Diamond.com has been serving customers online since 1999 and is devoted to bringing you a continuously evolving selection of fine diamond jewelry, certified stones and now, fancy color diamonds Each Diamond.com purchase includes FREE shipping, a free gift box, certificate of authenticity, 30-day return policy, and monthly payment plans for all fine jewelry purchases - NO FINANCE CHARGE The Design Your Jewelry section can be used to create a custom engagement ring or pendant by choosing from over 30,000 loose diamonds and many beautiful settings