Silgranit is colored all the way through. I.e. it's not a coating of anthracite on top of white. I would call Blanco customer service and ask them. I've had a Silgranit sink in anthracite installed for 3 years, and been careless with it, dropped my Lodge cast iron fry pan in it a number of times, with no consequence. I have not seen what you describe. Could it be hard water deposits? If you have mineral deposits on any surface, it will feel rough.

Mr clean magic eraser.

I have a white silgranite and was trying to clean off a black mark; it would not come off and I discovered it is a small chip.

"Has anyone had this issue and is there a fix?"

No and no.

"Could i sharpie the white marks to hide the chips?"

Yes.

thanks all. i just cleaned and oiled it and i could feel little divets taken out of the bottom of the sink. it is definately chips which is very disappointing. i looked at blancos warranty today and it does not warranty against chips or nicks so this has to be at least somewhat common.

joseph - as long as it is just little chips, the sink is still okay for use? i really do not want to have to replace it as it was installed by the fabricators in a way that will require removing the countertop to get the sink out. and no i was not informed that it would be done that way, i found out after the fact when i was inspecting the underside for the "mechanical" fastners they swore would be used but were not. i was not happy but you can imagine the lack of concern that caused

Call Blanco anyway. Their customer service is quite good.

Who supplied the sink? I'm wondering if there was a fast one pulled and it's not really a Blanco.

Mine came from the counter top fabricator and has the Blanco label on it. It was installed 2 months ago and is definitely chipped. I do not remember dropping anything or hitting it with anything.

"...it was installed by the fabricators in a way that will require removing the countertop to get the sink out."

I'm skeptical. It's not that big a deal to remove cabinet sides and fronts and reinstall them.

lwo - mine came from a recd blanco plumbing supply shop. it is def a blanco.

joseph c - it is the diamond sink that was supposed to be top mounted as it is too big for the cabinet undermount. when the granite showed up it was cut for undermount. they assured me that it would never fail, they use mechanical fastners and it would fit in the space so i let them go ahead and undermount it. after a little poking around under the sink i realized that one side of the sink is wedged inbetween the cabinet top and counter bottom. that is why i think pulling it would require counter removal. hopefully i am wrong.

oasisowner - i sent an email to blanco last night so maybe they will have further insight. i oiled it last night as well and the chips are not noticeable to the eye but you can still feel them. it sucks that your white sink is showing a black surface underneath! i wonder if an epoxy like they do for granite chips could work?

"i wonder if an epoxy like they do for granite chips could work?"

It may, but it's been my experience that the hot/cold cycling of sinks does not lend them to adhesive type repairs. It's worth a shot if you can be precise.

could i sharpie the white marks to hide the chips

Sure, if you wanted to defraud the buyer.

"i oiled it last night as well and the chips are not noticeable to the eye but you can still feel them."

Why would you oil it?

Blanco has very good customer service if you phone them. They are not as good in responding to emails. So I suggest you phone them. As far as I have heard, Silgranit is one solid color entirely, so Idk how your anthracite sink is showing white. I am curious as to the answer.

sherri - you can oil it to make it shine

sjhockeyfan - how is coloring the chips any different than touching up paint on walls or stain on wood? if it doesn't effect it's funcionality, just the look, then how is that any different than staging?

The difference is that touching up paint is a permanent fix, coloring over chips with a marker is intentionally hiding a flaw.