Is this permanently damaged?
Sorry if this is not the correct forum for this question. I usually hang out on the cooking forum. Anyways, we moved into our house a few years ago. The sink pretty much looked like this. Water stained and awful. I believe it's black granite. I won't even go into the brass basin. I've tried so many different cleaners ad home remedies to try and remove the water stains and polish it up. The only thing that makes it look decent is some lemon oil but that is temporary and lasts only a few days. I suspect this is permanent but wanted to ask the opinions of others. Any thoughts on cleaning this mess up would be greatly appreciated!