Peridot comes from the Arabic word “faridat,” meaning gem. Ancient Egyptians called them the “gem of the sun,” because of their dazzling brilliance when seen in the desert sun. It was believed that the Peridot glowed with light even as darkness fell, which is why miners were said to have scouted for these gems during the night, marking their location, and returning in the light of day to retrieve them. Perhaps this legendary mining method is the reason that the Peridot is sometimes called “evening emerald.” 
Peridots can be found in a number of places throughout the world. They are mined in areas surrounding the Red Sea, Egypt, and Myanmar, but also are common to areas of Mexico. In the US, some peridots can be found in Arizona. These gems are usually less valuable than peridots found in the Middle East because they contain more flaws. The highest quality gems are currently being mined in Pakistan.
With new findings of peridots in Pakistan, the gem is enjoying a rise in popularity. It has always enjoyed certain popularity, being the August birthstone. Many people again confuse emeralds and peridots when choosing birthstones. Emeralds are the birthstones of May. Those who are not particular, however, could wear either green stone as a birthstone, and some find the bluer tendencies of the emerald to be more flattering depending upon skin tone..
Some historians even suspect that at least some of the “emeralds” worn by Cleopatra were actually peridot. Much of its recent popularity can be explained by its currently being recognized as the birthstone for the month of August, people wear the stone because it is supposed to bring the wearer success, peace, and good luck.