Answer:
A certain wizard resided in a city made from this gemstone.
I can ruin your day, or darken your life. And while I'm expected, I'm never alright. I'm bad for business, and worse for your hair. Wherever I am, there's something not there.
What do people want the least on their hands?
With sharp edged wit and pointed poise. It can settle disputes without making a noise.
What has a bell but isn't a church. Is full of air but is not a balloon?
What can never be put in a saucepan?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?