Emerald’s lush green has soothed souls and excited imaginations since antiquity. Throughout history, emeralds have been prized and worn by royalty and celebrities, from Cleopatra, Alexander the Great and Charlemagne to Grace Kelly, Elizabeth Taylor and Jackie O. It is so prized that carat for carat, a fine emerald may be two to three times as valuable as a diamond. The gem of spring, emerald is the perfect choice as the birthstone for the month of May. It’s also the gem of 20th and 35th wedding anniversaries.