Anyone have suggestions on how to clean accumulated smoke stains on a stone fireplace mantelpiece? This is from 40+ years of fireplace use. I'm not sure what type of stone it is. House built 1958 in WI; stone is sort of a pinkish color, maybe Lannon stone; someone else suggested maybe Tennessee limestone?

Is this a do-it-yourself project or best left to a professional? Thanks for any help.

thanks for suggestion!