Peridot is a green colored, semi-precious gemstone from the Olivine . As an astrological substitute of emerald, Peridot is a mineral of the olivine family. It has a color that is entirely its own, but it is many a times confused with Emerald stone. The green color of a Peridot ranges from pale green to bottle green and dark green. It is the birthstone of August and a very auspicious stone for those couples who are celebrating their 16th anniversary. It is a very beautiful gemstone and so it makes very good jewelry. It is a stone of lightness and beauty and it has many benefits attached to it