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♦ GEMSTONE STORY
Peridot is a gem-quality olivine and a (Mg, Fe)2SiO4 type silicate mineral. The formulation approaches Mg2SiO4 because it is a magnesium-rich olivine (forsterite). The green colors of the gem depend on the structure of the iron contents. It occurs both in volcanic basalt and in pallastic meteorites in silica-deficient rocks. It is one of the two gems that have been observed to form in the rock of the upper mantle rather than in the earth’s crust. It’s gem-quality is unusual on the earth’s surface due to its environmental sensitivity when transporting deep into the mantle.
Peridot is a silicate of magnesium oxide; pure forsterite is colorless, but oxide substitute the green colors of some of the magnesium. Too much iron contributes to an attractive brown colored stone. It is the precious color without heavy yellow or brown distinctions, when it’s bright white. This altered barrel cut peridot is the most fine 46,16-carat stone in the National Gem Collection and Pakistan’s greatest peridot.
It is one of the few gemstones in one color only: an olive-green. But the size and color of the Green ranges from yellow to olive to brownish-gray in the crystal structure, depending upon the iron level of the structure. It may be medium-dark, pure white, in extreme situations, without a secondary yellow or brown mask.
• Approx Original Ring Size :
adjustable (one size fits all)
• Approx Table Size :
• FREE gift box provided – Ready to send as a gift!
• Product SKU : SR0002