Q. I bought an onyx marble pen and pencil set that had an engraving plaque on it. I removed it and of course dulled the shine when trying to clean the glue off. Any way to restore this to new? It is an old Scheaffer marble desk set. The slab is about... Read More

Onyx is very similar to marble and will react similarly. It can be honed and polished just like marble. FYI Onyx can be identified by its translucent appearance with its veins running in a parallel pattern. Onyx is found mostly on countertops and in... Read More

Q. Someone spilled white wine on my onyx table last night. I wiped it up, but this morning I see that it looks like it penetrated the table and left a dull finish over an area about 15 inches wide. Any suggestions what to do? I have a feeling time... Read More

Q. Someone spilled white wine on my onyx table last night. I wiped it up, but this morning I see that it looks like it penetrated the table and left a dull finish about 15 inches wide. Any suggestions on what to do? I have a feeling time is of the... Read More

Q. Can I remove etching from my stone?A. Maybe. If it is polished marble or travertine or onyx, then there’s hope. If it is hone-finished marble or travertine, or hone-finished slate (like a chalk-board), or mixed "granite" then you’d... Read More

Q. My fireplace surround is a honey colored marble which has become stained black from what I assume is smoke/soot from building fires in it. These stains appear to be below the surface, that is to say that the marble retains its sheen and most of... Read More

Q. Hello, I have a 2'x3' piece of white marble and some black marbling in it along with what looks like shiny glistening stuff in it. It is not shiny for it's in its natural state. It has been out in the weather for a long time. It... Read More

Q. I recently washed the mirrors about the marble or granite tiles with vinegar. Now there are spots on the tiles. Is there a way to remove these? It feels a little rough on the top of the spots as if the coating came off a bit. What can I do? A. The... Read More

Q. I recently laid out 30 sq feet of marble tile in an entry way. The tile originally was of a high gloss polished look. After the grouting I had a persistent grout haze that would not go away. The instructions on the grout said to use vinegar and... Read More

Q. I am wondering how to clean the marble step into our bathroom shower. It has a lot of dark brown crud -- I'm assuming it's mineral deposits -- that have built up over the years where the aluminum frame of the shower door meets the marble... Read More