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athenapadme1
The elements "gleams" when light is shined on it. These elements are usually reflective and in the transition metals group. 
mikaela6
Since luster is a property of minerals, luster also varies widely, so there are many different types. Mineralogists first divide the types of luster into two categories: metallic and nonmetallic. The metallic minerals are opaque and shiny in appearance

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