Lustre (mineralogy)

Lustre or luster is the way light interacts with the surface of a crystal, rock, or mineral.The word traces its origins back to the latin lux, meaning "light", and generally implies radiance, gloss, or brilliance.A range of terms are used to describe lustre, such as earthy, metallic, greasy, and silky.Similarly, the term vitreous refers to a glassy lustre. ---Image-Copyright-and-Permission--- License: Public domain ---Image-Copyright-and-Permission--- This channel is dedicated to make Wikipedia, one of th