T
Topshop
Wow, what are people thinking.
There are several acceptable products out there like Tenax Uniblack that will re-doctor your besalt to black again. The same polishing compound used on the onyx should have been used on the besalt at the same time but not allowed to sit and eat away at the stone. That would not have allowed the first mess to begin with. The oil is all wrong to use.
A pultice could be used and possibly eventually remove the oil but most of the pultices will etch both the besalt and onyx requiring them to be re-polished anyway. Get the hacks out of your house and call in a restoration pro.
There are several acceptable products out there like Tenax Uniblack that will re-doctor your besalt to black again. The same polishing compound used on the onyx should have been used on the besalt at the same time but not allowed to sit and eat away at the stone. That would not have allowed the first mess to begin with. The oil is all wrong to use.
A pultice could be used and possibly eventually remove the oil but most of the pultices will etch both the besalt and onyx requiring them to be re-polished anyway. Get the hacks out of your house and call in a restoration pro.