Hi all
Can anyone advise these limestone pieces for some reason are yellowing, I would guess from the minerals within the stone. When you treat them with a tanning remover it disappears, I applied a consolidator sealer, it complete disappears, then a few days later returns. Any ideas of how to make it not come back.! Thanks in advance
Garry Perth down under.

Sealwerx Wa
Garry@sealwerx.com.au
15 Ruse st
Osborne park 6917