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Bio Chrysophrase

The Chrysophrase gemstone is popular among jewellers but not so well know for the wider public. The allure is its mysterious colour (darker than in the picture); A gemstone with inclusions declared as a Bio Chrysophrase by the seller.

 

Size: 21x23 mm

 

Origin: Africa

 

In stock:  1

 

Price:    USD 11.20

 

Chrysoprase, crysophrase or chrysoprasus is a gemstone variety of chalcedony (a cryptocrystalline form of silica) that contains small quantities of nickel. Its colour is normally apple-green, but varies to deep green. The darker varieties of chrysoprase are also referred to as prase. (However, the term prase is also used to describe chlorite-included quartz, and to a certain extent is a colour-descriptor, rather than a rigorously defined mineral variety.)

Chrysoprase consists of crystals, so fine that they can not be seen as distinct particles at normal magnification. This sets it apart from rock crystal, amethyst, citrine and other varieties of crystalline quartz which are basically transparent and formed from easily recognized six-sided crystals. Other members of the cryptocrystalline family is the agate, carnelian and onyx. Unlike the emerald with its green colour of chromium, wearing chrysoprase trace amounts of nickel compounds in the form of very small inclusions.

The most known deposits of chrysoprase are Queensland Australia, Germany, Poland, Russia, Arizona, California and Brazil. Deposit in Szklary, Lower Silesia, Poland, was probably the largest European presence and possibly the largest in the world. A closely similar to the mineral chalcedony chrysoprase is where the colour comes in chrome rather than nickel.

Chrysoprase stands for protection and health.

 

 

 

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Latest update: 28 augusti 2015