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obsidian


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Term Type

Art & Architecture Thesaurus

Preferred Term

obsidian

Details

An acid-resistant black or dark-colored volcanic glass; it is noted for its lustre and curved, shiny surfaces when fractured. It is used for making jewelry, arrowheads, and art objects; named after Obsius who supposedly discovered it. Obsidian changes into pumice when it is melted.

Variations

glass, volcanic

volcanic glass

obsidienne

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