Some believe it is derived from the Arabic faridat, meaning “gem,” or from the Greek word, peridona, which means “give in abundance.” Given its resemblance to the color of money, peridot has often been associated with prosperity and good fortune
What are peridot stones good for?
Peridot Metaphysical Properties

Known as the stone of compassion, peridot is believed to bring good health, restful sleep and peace to relationships by balancing emotions and mind. This friendly bright green stone also has the uncanny ability to inspire eloquence and creativity; it also brings delight and good cheer.