The Egyptian gave peridot the moniker âgem of the sunâ for its light properties and appearance, believing that it protected its wearer from âterrors of the night â. The owners and wearers of this gem often view peridot to be a source of good luck and prosperity. The stone also has healing powers and is used for curing diseases like asthma. Peridot usually is transparent and comes in a beautiful array of colors, from brownish o...