Before wet mopping, it is essential to vacuum up particles/dust or outside contaminates which contain an abrasive grit which will cause dulling, scratches and wear. Only use a pH balance stone cleaner, it will say neutral cleaner on the bottle, this will help maintain the natural luster and seal of your stone or tile. NEVER USE: Bleach, vinegar, high alkaline cleaners, acidic cleaners, as this will damage or remove sealant and over time deteriorate stone.
This will save you money in the long run on maintenance and restoration costs.