Answer:
I am a shower that lights up the sky
I'm white and used for cutting and grinding. When I'm damaged, humans usually remove or fill me. For most animals I am a useful tool. What am I?
What has a ring but no finger?
Curtail me thrice I am a youth; behead me once a snake; complete I'm often used in truth when certain steps you'd take.
I belong to everyone. Sometimes make you happy sometimes make you sad. I will never end until the day you do.
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.