Luster

Real World Example

Imagine you're trying to pick out a new phone case, but the choices are overwhelming because they all look different under various lighting conditions. Just as the surface of the phone case changes its appearance depending on how it reflects light, a mineral's surface reveals its luster based on its light reflection properties. Just like how the phone case might look shiny, matte, or glossy based on the material it's made of, a mineral's luster can be described as metallic, glassy, or dull, depending on how its surface interacts with and reflects light.

Real World Example Illustration