Peridot Polished Stones
These polished peridot stones were lightly tumbled from material mined in Pakistan.
Peridot is one of only a few stones to occur in just one colour. Shade can vary from brownish-green to yellowish-green depending on the amount of iron present. The finest peridot tends to have more magnesium than iron.
Inclusions in peridot are common and where present in abundance, will cause the stone to become opaque. The chromium-rich mineral chromite is the most common inclusion.
Whilst most gemstones occur in Earth's crust, peridot and diamond occur in the upper mantle. Olivine is believed to make up as much as 50% of the upper mantle. Peridot is the gemstone variety of olivine.
Peridot is estimated to be somewhere in the region of 4.5 billion years old.
These rich green-coloured peridot stones all have minor flaws. This is common in peridot because of the way it's forced up to the surface from Earth's core. This is also the reason why most peridot gemstones are small.
OPALITE
