Emerald is the birthstone for the month of May. It is also the anniversary gemstone for the 20th and 35th years of marriage. Emerald is one of the most highly-prized of all the gems. The name comes from the Greek "smaragdos" which means green stone. The most prized is pure grass green. Emeralds are often characterized by a garden of included crystals trapped within, known as the "jardin", because under magnification you will see all sorts of lovely patterns resembling foliage in a garden. A flawless, clear emerald is very rare and is usually found in only small sizes. Small to medium sized stones are often faceted in the "step" or emerald cut. The gem is also lovely when cut into a cabochon or dome shape. Sometimes emeralds are even carved. According to legend, the wearing of emerald not only cured a wide range of ailments, including low I.Q., poor eyesight and infertility, but also enabled the wearer to predict the future. As part of the normal fashioning process, most emeralds are immersed in colorless oil or resin so small voids are not as noticeable. Care should be taken to protect it from scratches, sharp blows, household chemicals, and extreme temperature changes. Do not use a home ultrasonic machine. Emeralds are found mainly in Colombia, Brazil, Zambia and Zimbabwe.