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Prasiolite

Prasioliet, also known as green-amethyst, belongs to the quartz group. Quartz is the most abundant type of mineral in our earth's crust. There are more than 40 types of quartz, which come in different colours and have different names. Among these various different types, belongs Prasiolite. 

Locations

This gemstone is partially processed by nature and partially by people. Prasiolite has a leek-green colour and the name literally means "leek stone". Since the 50s, Prasiolite has been made in Brazil. In the Montezuma mine, located in the Brazilian state of Minas Gerais, a yellow-ish Amethyst quartz was found. When "burnt" at 500 degrees Celsius, this yellow-ish Amethyst stone turned a "leek green" colour. This is why Prasiolite is also known as green-amethyst.

This process can similarly be carried out by nature itself. There's a high chance you'll come across Prasiolite in old geodes where Amethyst stones are formed, for example. Usually, Amethyst geodes turn into Prasiolite when heated at a very high temperature. Meanwhile, one can also give the Rhinestone a leek green colour, too. This is done by exposing it to radiation.

Prasiolite is not only "found" in Brazil, but also in the United States, Madagascar, Namibia, Sri Lanka, Russia and Finland.

To the naked eye, Prasiolite can be mistaken for Beryl, Peridot and Tourmaline gemstones.

Characteristics

When using Prasiolite in jewellery, it is wise to take a number of characteristics into account. As mentioned, Prasiolite belongs to the quartz group. Quartz has a hardness of 7 on the Mohs scale. That's pretty hard (it would scratch a window, for example) but it is of course susceptible to breaking. 

In addition, the bright variant may fade under the after long-term exposure to light. Therefore, do not place this gemstone in sunlight and be careful when displaying it under lamps.