Olivine is a magnesium iron silicate. It takes its name from its colour which is typically olive-green due to traces of nickel in the rock. Although Olivine is the generic name, this mineral also has a number of other names, for example Chrysolite from the Greek meaning 'Golden Stone', or Peridot (which is what the French call Olivine). In general usage Peridot refers speciffically to those speciments of Olivine which are gem quality. Some of the finest Peridots have been obtained from the mantle rocks of Zabargad island in the Red Sea.


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