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Lustre (mineralogy)




Luster is a description of the way light interacts with the surface of a crystal, rock, or mineral. For example, a diamond is said to have an adamantine lustre and pyrite is said to have a metallic lustre.

Additional recommended knowledge

The word luster traces its origins back to the Latin word lux, meaning "light", and generally implies radiance, gloss, or brilliance.

Other descriptive terms used for gems include vitreous, like glass; resinous, like amber; waxy, like jade; greasy, like soapstone; pearly; and silky.

The term is also used to describe other items with a particular sheen (for example, fabric, especially silk and satin, or metals).

See also

 
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Lustre_(mineralogy)". A list of authors is available in Wikipedia.
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