Peridot is a transparent variety of Olivine and belongs to the forsterite-fayalite mineral series. It is an idiochromatic gem (single colour gem) : peridot is only found in green. But there are shades of green depending of the amount of iron it contains : from light yellowish to dark brownish-green. The more there is iron, the more the peridot’s colour is intense. Furthermore, the name “peridot” comes from the Arabic word for gem “faridat”. Besides, the finest peridot stones are found in Mogok (Burma), Pakistani ; there are also deposits in Arizona, China and Vietnam.