Amazonite or Amazonstone

Amazonite is a gem variety of microcline feldspar, being potassium aluminium silicate. It is usually polished as a cabochon.
In common with other feldspar gems, it displays a schiller of coloured light, caused by inclusions or its crystal structure creating meddling effects of light.
It is sometimes called amazonstone or amazon stone, perhaps because one of its sources is Brazil, although not from the Amazon regions.

Amazonite varies from bright verdigris green to a bluish green.
The stunning green of the Amazon jungle is reflected in the stone that bears its name, Amazonite. The Brazilian myth holds that the people of the Amazon region gave green stones to the men who visited them. This was believed to be amazonite, but if the fable is true, it was probably nephrite (jade). It was used at length by the Egyptians.

Amazonite is a microcline feldspar, which means that it cleaves into rhomohedral chunks. Amazonite is found in the United States (notably in Amelia Courthouse, Virginia), Brazil, Zimbabwe, Russia, Australia, and Namibia. Amazonite is usually light green to blue-green, mottled and sometimes contains light striations. A semi-opaque stone that A comparatively soft stone, Amazonite ranges from 6-6½ on the MOHS scale.

It is popular as an ornamental stone and as well as a gemstone for use in jewellery. Amazonite is not enhanced.