What is Luster?
Luster refers to how light is reflected from the surface of a mineral. The two main types of luster are metallic and nonmetallic.
What is Metallic Luster?
Minerals exhibiting metallic luster look like metal, such as a silvery appearance or that of a flat piece of steel.
How many types of nonmetallic luster are there?
- Vitreous: The luster of glass
- Resinous: The luster of resin.
- Pearly: The luster of pearls.
- Greasy: Looks like it is covered in a thin layer of oil.
- Silky: The luster of silk.
- Adamantine: A hard, brilliant luster.
Another common nonmetallic luster is called translucent luster, where you can see into the mineral, but not completely through it. A mineral that displays a transparent luster transmits light completely through it, resembling glass.
