1. Can the piece me microwaved/ used in the oven?
A: Yes. As long as the piece is at room temperature and it isn't exposed to too drastic of a temperature difference. I personally bake in my bowls.
2. Can they be used in a dishwasher ?
A: Yes. Be certain that the detergent is mild and doesn't contain bleaches , soda or acid. I usually recommend a quick rinse.
3. Will they break if dropped ?
A: Yes. They are handmade and ceramic products and some amount of care is necessary.