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.

youdao

随著岩浆冷却，首先结晶出的矿物是橄榄石和辉石，富含铁和镁。

As magma cools, the first minerals to crystallize are olivine and pyroxene, which are rich in iron and magnesium.

youdao