Soldering flux and pickle solution containing boron will etch the surface of the stone. It was attributed with various powers and to develop to full strength it was set in gold to ban terrors of the night. Others strung it on donkey hair and wore it on their left arm to ward off evil spirits. Powdered peridot was prescribed for asthma and held under the tongue it was thought to lessen thirst in fever. The peridot is sometimes called the evening emerald because it seems to glow and take on a light of its own at night.
Peridot belongs to the forsterite-fayalite mineral series.
This stone can be transparent to translucent, yellowish green to greenish yellow to brownish green. In extremely rare instances it may be asteriated. Peridot is suitable for all jewelry applications. There are no commercial enhancements known. Never use ultrasonic and steamers.