Answer :

The appearance or quality of light reflected from the surface of a mineral is called luster.
Color refers to the color - it is self-explanatory. Cleavage is where the minerals break.

Answer;

Luster

Explanation;

  • The appearance or quality of light reflected from the surface of a mineral is called luster.
  • Luster refers to the manner in which light interacts with the surface of a mineral, rock or crystals. Different minerals will display various types of luster that are unique to a particular mineral, such as greasy, waxy, pearly, shiny etc.
  • Luster is an important property of minerals as it is one of the features used in the identification of minerals and it is good in the identification of metallic minerals which have shiny metallic luster.

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