What Am I Riddles

Question: If you look at my face there won't be 13 any place.

Question: You put me in dry but then I get wet.
The longer I stay in, the stronger it will get.

What am I?

Question: I stand in one place yet I fill a whole room.
I can be filled with molten rock and come in every hue.

What am I?

Question: I look green but I am not. I look blue but I am not. I look red but I am not. What am I?

Question: Each morning I appear to lie at your feet. All day I will follow no matter how fast you run. Yet I nearly perish in the midday sun. What am I?