Peridot (PEAR-ih-doe) belongs to the forsterite-fayalite mineral series, which is part of the olivine group. The name is derived from the Greek word peridona, meaning to provide plentifully. Peridot ranges in color from yellowish Green to greenish Yellow. Because of the way Peridot splits and bends the rays of light passing through it, it has a velvety, "sleepy" appearance and a shining rich glow. The amount of Iron determines the color saturation.
The very best top gem quality Peridot comes from the Pyaung Gaung mine, in the Bernardmyo village, north of Mogok, Myanmar (Burma). This Burmese Peridot is usually a rich olive Green and previously was readily available in large gem quality stones. Sources for these fine stones today are quite limited, and premium prices of $500-$700 per carat can be demanded for fine large gems of top color.
In the 1990s, in Pakistan's Suppatt region a new deposit was discovered, and is almost as good as that from Burma. Pakistan Peridot is normally a very nice rich olive Green, and can still be found in larger gem quality stones. Pakistan Peridot prices are higher than Arizona Peridot and a little lower than Burma Peridot. Premium prices can still be demanded for fine, top gem quality Pakistan Peridot.
The U.S. has also become a major source for Peridot since the world's largest known deposit is on the San Carlos Apache reservation 80 miles west of Phoenix, Arizona, but this material rarely cuts gems above 10 carats. The rough is dug by Native Americans who sell to nearby dealers. The faceted Arizona Peridot is normally bright, yellowish Green with minimal inclusions. Arizona Peridot is usually modestly priced, typically between $50-$100 per carat.
Peridot is heat sensitive, uneven or rapid heat may cause fracturing or complete breakage. Chemicals that could attack this gem are sulfuric acid and hydrofluoric acids. Acid perspiration of some people may attack Peridot over a long period of time. Jewelers pickling solutions will etch the surface.
Peridot is also mined in China, Brazil, Australia and Norway, among other places. The historic deposit of Zabargad Island has not been mined for Peridot in many decades. Top Quality Large Peridot is an excellent choice to add to your Collection of Gemstones.
TREATMENTS - Typically Peridot is not treated or enhanced.
CARE - It is very risky to clean Peridot in an UltraSonic Cleaner, and should never be cleaned with a steamer. We recommend Ionic Cleaners and/or warm, soapy water and a soft brush as the best way to clean this gemstone jewelry.
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