A notebook has lustre while eraser does not. (True or False)



Notebook and eraser do not have any lustre because they are not metals. Lustre is gentle shining light that is reflected from a surface, for example from polished metal. Lustre is an optical property of minerals. There are two main types of lustre, metallic and non-metallic, with an intermediate lustre of submetallic.

  • The intensity of the lustre depends upon the amount of light reflected from the surface, which is generally related to the refractive index of the mineral.
  • Non-metallic, or sub-metallic luster includes waxy, pearly, silky, vitreous, greasy, resinous, dull, and adamantine.

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