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Home > Luster


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 luster and pyrite is said to have a metallic luster.

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



MineralogyMineralogy is an earth science that involves the chemistry, crystal structure, and physical (including optical) properties of minerals. Studies also include the processes of mineral creation and destruction. The International Mineralogical Association is

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