Cleaning unsealed granite?

[SippingSipsmith]

Does anyone know how to really clean up and revive UNSEALED granite?

It's a garden table and has gone yellow around the edges.

Thanks

I've tried

Dr beechams m
Method
Waitrose own brand
The latter 2 were for sealed stone but tried it anyway.

Still yellow at the edges instead of white/grey

Have you tried scrubbing with normal bleach?

No - a bit scared? Will that work? I'm just so worried about damaging the stone as the care guide said no acid

Well the only other thing I would try is a paste made of bicarbonate of soda. Scrub on leave and then wash off.

Thank you!