Dull granite worktop

[dan7764]

The granite draining board has gone dull and needs polishing.
I have tried vinegar with no effect..
Do any one know the best way to get this to shine again?

 

[Wayners]

Is that a corian worktop which Is man made. Looks like granite but that's where the similarity ends.

It's not cold like granite.
It's not as heavy
Don't ever get solvent near it as will go white but it can be sanded and polishing to remove scratches.

 

[foxhole]

The granite draining board has gone dull and needs polishing.
I have tried vinegar with no effect..
Do any one know the best way to get this to shine again?View attachment 404297

Probably limescale through lack of cleaning , try limescale remover .