The month of May brings the birthstone of Emerald. Reflecting the color of spring, Emerald is the birthstone for May. It is also a traditional gift for those celebrating 20th or 35th anniversaries. The most valuable Emeralds are a pure, vivid green but they also come in various shades. Emeralds are often associated with magic and mystery. The color of nature, they are said to promote a calm and peaceful spirit.