What is the meaning of Opaque and Luster?

An opaque object is neither transparent (allowing all light to pass through) nor translucent (allowing some light to pass through), it just does not allow any light to pass through it. 

Examples- wood, iron sheet, a brick wall, etc.

Luster refers to the way light interacts from the surface of a crystal, rock, or mineral.

It is the appearance of a mineral surface in terms of its light-reflective qualities.

Example- Diamond, Pearl, etc.

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Updated on: 10-Oct-2022

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