Peridot is the birthstone for the month of August. It is also the stone given to celebrate the 16th year of marriage. It is the National gem of Egypt. Ancient Egyptians knew it as “the gem of the sun.” Peridot has been long considered to be an aid to friendship and supposedly frees the mind of the envious thoughts. It is also supposed to protect the wearer from the evil eye. Other legends credit peridot with bringing happiness and good cheer, attracting lovers, and strengthening the eyes.