Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Bowls are defective

We purchased 8 of these pasta bowls from Mikasa. We have the entire Italian Countryside dinnerware set and it has been a beautiful set, but the pasta bowls developed black marks randomly on the bowls. It appeared that something was leaching out. We are now down to 3 presentable bowls. I DO NOT RECOMMEND these pasta bowls.