removing paint from indian stone?

[stelancs]

HI, newbe here after some advice.

I am working for a client and ive managed to get a small amount of scraped masonary paint on a small part of the indian stone patio area (from scraping off using wickes paint stripper, a small piece of the scraped paint was embedded in the sole of my boots) anyway the stone now has a few small patches where ive walked before I realised, ive tried a scrubbing brush and blasted it with the lance of a domestic power washer, all to no avail, what can you guys recommend to remove it, e.g. fluids etc etc
some of the stone is sealed some not, any advice and info appreciated

[welsh brickie]

the best method is sand blasting,its the most effective

[aarvi]

Sandblasting is really good method for paint removal.