Instruct: Classify Amazon reviews into positive or negative sentiment
Query: TERRIBLE PIZZA STONE.

I cannot express to you enough how much I hate this pizza stone. I ordered my first one several months ago and was very excited to begin using it. I made sure to preheat the stone for the appropriate 30-40 minutes before using it and took special care to scrape and wipe it off with a dry cloth before storing it away. However, after the 5th time using it, it broke in half completely. I promptly wrote amazon and told them and they very kindly sent me a new one for free (kudos to amazon's customer service) and apologized for the problem. I've since been using my 2nd pizza stone and one of the corners completely broke off after it had cooled. Not sure what I'm going to do to make pizza but I am most definitely not going to buy any other products from this particular company. This is a terrible pizza stone!