I dont think its cloudy, just dull. Its never been in a dishwasher (only got my first one of those last year). It was my great grandmothers and its been in a cupboard for the last 30 years (I think it needs to head back in that cupboard :lol:). I cant describe it very well, its looks like bottle glass to me - flat. Perhaps its because the glass is so thick (nearly 1/2 cm thick (the base is even thicker)). Thanks, Sarah