>Peridot: The poor man’s emerald-August Birthstone
Written by sudha on January 11, 2009>
Peridot is usually pronounced as pair-uh-doe and it’s an array of olivine (not a certified mineral) that is consisted of two minerals known as fayalite and forsterite. Fayalite (Fe2Si04) is iron rich while forsterite (Mg2Sio4) is a manganese rich mineral.
A large number of gemstones that have a mineral origin form in the crust of the earth. But peridot and diamond are two such elements as form deeper in the earth and this deeper region is known as mantle. Peridot crystals are found 20 to 55 miles deeper and they pop up on the surface due to tectonic or volcanic activity. Similarly, diamonds form around 100-150 miles below the surface where temperatures and pressures are extreme.
There are only few gemstones that come in one color and Peridot is one of them. The deep effects of green color depend on iron composition in crystal formation and it also fluctuates from yellow-green to olive and brownish-green. Peridot is also called poor man’s emerald. No doubt, olivine is abundantly found mineral but still gemy peridot is rare in fact.
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