> Plates are often made of some glass-like or ceramic-like material and not that easily damaged by chemicals. A ceramic is a glass (or the other way around), j

> Plates are often made of some glass-like or ceramic-like material and not that easily damaged by chemicals. A ceramic is a glass (or the other way around), just of a different material composition. And yes, a dishwasher can easily damage both glassware and ceramic dishes depending on how the glass (or glaze, in the case of a ceramic dish) was formulated. A common durability test for ceramic engineers is indeed — placing it in the dishwasher.