Help with stone floor

[Trethew]

The whole of my downstairs is stone with underfloor heating. The stones are very rough hewn, and are sealed with a water based sealant.
They now look tired and grubby. Pic shows dry floor after being mopped this morning. Can anyone advise how to get a soft sheen that brings up the colour? And does anyone know where you can get one of those floor polishers with rotating brushes that I remember from childhood?

You can hire the cleaning brushes - and buy sequent with a shine

www.hss.com/hire/c/cleaning-and-floorcare/floor-scrubbers

I use a bona product you can get in b&q it's a stone/slate tile polish you squirt it on and mop it over. Leave to dry and do a few more coats. Brings our riven slate up beautifully with little hassle or maintenance. I re do every few months

I tried a very expensive (and toxic smelling!) varnish product that had to be painted on and to be honest the wear and finish was no better

Thank you.
gravy did you strip the old polish/sealant off first, or put it straight over?

Regards the cleaning machines.. I hired one for the weekend and it was awful. Heavy, cumbersome and there's a real knack to using them.. you need to sort of balance it so it hovers rather than shooting across the floor maniacally with you still attached! I switched it on, it flew across the kitchen heading for my glass doors, i shit myself and switched it off.. that was the end of that til DH came home and gave it a go! What we then did is buy a floor brush attachment for a drill off Amazon. Much much easier to control! So it's a flat hard brush and you attach it to the drill, instead of the drill bit, switch on drill and the brush rotates.. best way to describe it, it was like a large electric toothbrush. We use that now and the brush was about 7.99 from memory..

Thanks again. I checked out the link above and really not suitable for my house, and also nearly 20 miles to nearest outlet. Will investigate drill attachments

first time I did, spent ages scrubbing with a brush then used slate oil. Then for future applications couldn't be bothered and just slapped it on top. It looks great, gives a really nice sheen and shows up the dirt way less