aventurine

aventurine

[uh-ven-chuh-reen, -rin]
noun
1.
an opaque, brown glass containing fine, gold-colored particles.
2.
any of several varieties of minerals, especially quartz or feldspar, spangled with bright particles of mica, hematite, or other minerals.
Also, aventurin.
Also called goldstone.


Origin:
1805–15; < French, equivalent to aventure chance (see adventure) + -ine -ine2; so called because metal particles are introduced into the molten glass pell-mell (à l'aventure)

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aventurine, aventurin or avanturine (əˈvɛntjʊrɪn, əˈvæntjʊrɪn)
 
n
1.  a dark-coloured glass, usually green or brown, spangled with fine particles of gold, copper, or some other metal
2.  Also called: sunstone a light-coloured translucent variety of orthoclase feldspar containing reddish-gold particles of iron compounds
3.  a variety of quartz containing red or greenish particles of iron oxide or mica: a gemstone
 
[C19: from French, from Italian avventurina, from avventura chance; so named because usually found by accident; see adventure]
 
aventurin, aventurin or avanturine
 
n
 
[C19: from French, from Italian avventurina, from avventura chance; so named because usually found by accident; see adventure]
 
avanturine, aventurin or avanturine
 
n
 
[C19: from French, from Italian avventurina, from avventura chance; so named because usually found by accident; see adventure]

Collins English Dictionary - Complete & Unabridged 10th Edition
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aventurine

either of two gem minerals, one a plagioclase feldspar and the other quartz. Both have a sparkling reflection from oriented minute inclusions of mica or hematite.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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