Gerber Sharpening Stone

I have a Gerber Fast Draw spring assist knife and it must have god a little wet because now all of a sudden there are rust spots all over the blade that werent there this morning
because the rest of my knives are properly coated with various mixtures and powder coated on so if they do ever rust you can sharpen it off how do i go about removing the rust from the blade without scratching it to hell and ruining the coating
and also if anibody knows where i could get another 3 sided rough medium fine diamond grit sharpening stone because the one i have got damaged and i cannot find another

How bad is the blade rusted? For mild rust, put some type of oil on it and let it sit for a bit, 3in 1 oil and WD40 works great. The oil will break down the rust and it should come off quite easy. If there’s a lot of rust or the rust is being stubborn, bar keepers friend would do the trick.

Gerber Sharpening Stones