Luster describes how light is reflected on a mineral's surface and is an important property mineralogists examine to identify minerals. There are two main types of luster: metallic and nonmetallic. Metallic luster resembles polished metal and applies to opaque, reflective minerals, while nonmetallic luster covers minerals that do not look metallic and includes further subcategories.

1. Defination:
Luster is a property that describes how light is reflected on the
surface of a mineral.
It is one of the properties mineralogists look at when trying to
determine the identity of a mineral.
Md.Nazrul Islam Bhuyain
Id no: CEN-05007838

2. Types of Luster
• Mineralogists first divide the
types of luster into two
categories: metallic and
nonmetallic.
• Metallic luster is for minerals
that are opaque and
reflective and have the look
of polished metal.Example
• Nonmetallic luster is the type
of luster for minerals that do
not look metallic. These are
further divided into different
types:Example