marble refinishing

Go and find a tame monumental mason (bloke who does grave stones). He'll tell you how to do it - and will probably do it for you for a small fee.

Chances are that that you'll need a water-lubricated saw to cut it, anyway.

Marble cuts easily with a wet tile cutter. Within the limits of the thickness that can cope with obviously.

Yes, it polishes with all the usual abrasives.

Wet and dry, and T-cut ;-)

I didn't bother finishing mine. But maybe lithofin stuff is good.

Cuts OK on a tile saw.

I was given a Victorian, marble washstand and cut it out to accept a modern basin. Angle grinder plus diamond blade cut through the marble like cheese. The marble though had a couple of rust stains and no amount of cleaning and chemicals could shift them (yes I tried the classic Oxalic acid). Even tried skimming the whole surface down a couple of mm, only to discover that marble is a porous material and any staining can go deeeep. Binned it!.