Peridot
Peridot is gem-quality olivine and a silicate mineral with the formula of (Mg, Fe)₂SiO₄. As peridot is a magnesium-rich variety of olivine, the formula approaches Mg₂SiO₄.
Peridot is gem-quality olivine and a silicate mineral with the formula of (Mg, Fe)₂SiO₄. As peridot is a magnesium-rich variety of olivine, the formula approaches Mg₂SiO₄.