shiny
The Dull and grainy looking rock is more likely to let water pass though
Iron is not beautiful but dull is an exaggerated word.
shiny
Shiny
It is then sedimentary rock.
lustre
A rock with a dull color could be shale, which is typically gray, brown, or black in color and has a dull luster. Shale is a fine-grained sedimentary rock that is made up of clay and other mineral particles.
The Dull and grainy looking rock is more likely to let water pass though
dull
That is the property of "luster".
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?