橄榄石是一种镁铁硅酸盐，普遍存在于宇宙之中——远之星系，近之彗星。当然，珠宝店也不例外，其宝石级原石被称为贵橄榄石（peridot）。

Olivine is a magnesium iron silicate that exists throughout the universe — in distant galaxies and local comets — as well as in earthly jewelry stores, in a pristine, gem-quality form called peridot.

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