Peridot is an olive green gemstone that is often called olivine, as it relates to the gemstone colour. Whereas olivine is actually the name of a group of minerals, of which fosterite is a species and peridot is a variety of the fosterite species. It is one of the few gemstones found in only one base colour, green, which varies from light yellowish green, to olive green, to dark green.
The first source of peridot is believed to be the Red Sea island of Zebirget (Zabargad, St. John’s island) where it was mined over 3,500 years ago. The gemstones from Zebirget are of superior quality and although it is still sourced from the island, mining is sporadic.
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