Naturally occurring prasiolite has also been found in the Thunder Bay area of Canada.

[4] Most prasiolite sold is used in jewellery settings, where it can substitute for far more expensive precious gemstones.

Currently, almost all prasiolite on the market is made from amethyst via a process of heating and irradiation.

Other names for green quartz include vermarine and lime citrine.

Darker green quartz is generally the result of artificial treatment.