Answer:
I have no weight but I could destroy a mansion. What am I?
My first is second in line; I send shivers up your spine; not quite shining bright I glitter in the light.
What goes up but never comes down?
The faster you run, the harder it is to catch me. What am I?
Without me everyone would lose their head.
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.