These thirteen polished peridot stones are currently the only pieces we have available. Lightly tumbled from material mined in Pakistan. Peridot is one of the very few stones to occur in just one colour. Shades can very from a brownish green to yellowish green depending on the amount of iron present. The very finest peridot tends to have more magnesium than iron.
Inclusions are common and where present in abundance will cause the stone to be opaque. The chromium rich mineral chromite is the most common inclusion.
Peridot crystallises at very high temperatures so is one of the first minerals to crystalise as magma cools. Due to the distance it has travel to get to Earth's surface, flawless stones exceptionally rare.
The mineral olivine is unable to survive for long on the surface in wet climates. This is likely to be the reason why it can only be found in arid or semi-arid environments.
References to peridot can be traced back thousands of years. In his encyclopaedia Naturalis Historia the Ancient Roman author and natural philosopher Pliny the Elder talks of a green stone believed to peridot that was given Berenice, Theban queen of Lower Egypt around 300 B.C. According to the bible it's also believed to have been one of the stones in the first row of the high priest breastplate. This garment was worn by Aaron the first Jewish high priest.
Peridot is estimated to be somewhere in the region of 4.5 billion years old.
These rich green coloured polished stones all have minor flaws. This is very common in peridot because of the way it's forced up to the surface from the core of the earth. This is also the reason why most peridot gemstones are very small.