How To Polish An Onyx Marble Desk Set

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 13"x6.75"x1". If I brought it in, is this something that you could do - buff, polish and reseal? Alternatively, any recommended products?

A. Try using an etch remover cream and a soft cloth to polish the onyx. If you would rather bring it to a professional stone restoration contractor, contact us to find a Certified SurpHaces PRO Partner near you who can hone, polish, and seal your marble.