There is a polish for that in a tube like toothpaste. Called "Wenol" -I believe it's German , but sold in Canada and possibly in US.
There are lots of products for that, like Dazzle.
water spots
Precum
If the rock is granite, the pink spots are probably feldspar. Look for colorless spots and black shiny flaky spots, these will be quartz and mica, which are the other components of granite. Pink spots on a flaky, shiny, micacaeous grey or black rock might be garnets in mica schist.
No, when stainless steal comes in contact with certain liquids (of the house cleaning varitey) will "bleach" stainless steal
Why do I have shiny spots on my exterior wall after painting the wall with behr premium plus semi gloss enamel
Sand the spots down to shiny metal using fine sandpaper.
If its just small spots of rust, I use a scouring pad (usually metal) whcih removes the rust spot quite nicely without harming the finish of the cutlery.
Personnel working close to the equipment and blind spots
like a little ,shiny frog that is either blue,yellow,or red with spots.
A lttle vinegar and water, dampen your cloth with the solution and wipe each piece. trust me.
It would depend on what caused the spots and where the spots are located. Without more information, there is not enough to answer the question more specifically.