You can! but be careful what to use to handle the marble.
It is not recommended that clay be put into a microwave. Depending on what the base of the clay is, it can either melt or become hard and crumbly.
microwave
You can heat any food in an over that you would in a microwave, you'll just have to put it in an ovensafe container. For example, you can't put plastic in the oven but it works in a microwave.
plate
salad can not be cooked in the microwave.
No, just because it's microwave safe does not mean it's oven safe. The thermal mechanisms involved in microwave radiation and convective heat are completely different. Many plastics are microwave safe, but you should never put plastic in the oven.
It is not usually nesessary to put a cover on food in the microwave oven. Some people cover food to prevent soiling the inside of the oven.
Yes it is ok. Just do not put it in the microwave. It will spark.
put it in a microwave oven
Yes you can. You cannot though if it's a microwave oven, and you cannot put on the oven itself, only as a lid for a pan etc.
Just f*ed up our oven... apperently you can't.
Put it in the microwave or on the oven.
put it in a microwave or an oven and wait to see what happens.