A penny can be shiny when it is new, but it typically becomes dull over time due to oxidation and wear. Regular handling and exposure to the elements can cause the penny's surface to lose its shine and become more dull in appearance.
dull
Dull?
No, cotton is typically a dull fabric and not shiny in appearance.
Slate is typically dull in appearance. It has a matte finish and does not have a shiny or reflective surface.
Tellurium has a shiny luster.
It is generally dull, but it is shiny if you cut it.
dull
dull
shiny
It is shiny.
Shiny
High purity must be shiny, but if oxidized it will become dull
It could be dull or shiny. It doesn't matter.
Dull?
Iron is not beautiful but dull is an exaggerated word.
shiny
No, cotton is typically a dull fabric and not shiny in appearance.