The stone sample is lovely enough to make its care sheet feel like an interruption. Bring the sheet back. It describes the bathroom you will own after the showroom lighting is gone.
Staining and etching are different problems
The Natural Stone Institute's care guidance explains that acidic products can etch calcareous stone and that sealing improves stain resistance without making stone stainproof. Ask the supplier about the exact stone and finish. A product that removes scale elsewhere may damage this surface.
Compare a whole cleaning routine
Read the porcelain manufacturer's instructions too, including restrictions for decorative finishes. Consider grout, joints, water deposits, and how much visible change you enjoy in a material. Put the approved cleaner on the shopping list now and compare it with what's already in your bathroom cupboard. If one person orders the stone and another usually cleans it, both should see the care sheet. That's a more useful conversation than discovering the acid restriction beside a fresh dull patch. Take samples home and review approved cleaning products before deciding. Neither a glamorous photograph nor the word natural tells you how patient you will be on cleaning day.
Before the next step
- Ask for the exact material and finish care sheet.
- Distinguish staining, etching, and ordinary deposits.
- Choose the maintenance routine before ordering the tile.
Choose the material whose cleaning routine you can live with on an ordinary Tuesday. Once the tile is settled, keep a few matching pieces for future repairs, while the right batch is still in front of you.