Iron is not beautiful but dull is an exaggerated word.
shiny
Shiny
Helium is neither shiny nor dull; it is translucent (transparent; colorless). Helium is a colorless gas
Minerals that appear dull in luster typically have a rough, chalky, or earthy appearance. Examples of dull minerals include kaolinite, clay minerals, and some varieties of gypsum. This dull appearance is usually due to the mineral's physical properties and lack of reflective surfaces.
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.
Lustrous is a term that defines a condition between dull and shiny.