A sealer won't prevent etching though. It sounds like that is your intension with the sealer. It helps prevent staining. For protection, on my marble counter in the bathroom, I bought a couple of long ceramic trays from Pottery Barn. I use them for my tooth brushes and other items. I have a microfiber cloth nearby that I wipe the counter with after use. I have had my counter for almost a year and I can't see any etching on the honed surface. There may be some, but I don't see it in my soft light bathroom. The sealer I've used is Miracle 511 Impregnator Penetrating Sealer. It does not enhance or darken the stone.

Hi Poppy, I answered your last post and also noticed that it disappeared...... I can't attest to long term results or performance under heavy use just yet but I sealed mine with Miracle brand 511 Porous Plus Impregnator/Sealer. It seems to be the most recommended among the pros. There are several threads on the subject with more details, if you use the search function on the bottom of forum page and use Marble Sealer as the search term, you'll get some serious results. If you're in need of more reading material after that, repeat the search in the bathroom forum. Bill Vincent's posts are very informative and he is a reputable professional so I went with his recommendation. If you search on sealers, pay special attention to his advice, he's a great source of reliable information here. Good luck to you and congrats on getting some marble!!!

Umm, it looks like that product is a grout additive, to be mixed in with the grout instead of water, and since the grouting is already done, that won't work. I'm looking for a sealer that I can apply to both my tile and non sanded grout to seal both, and something that is OK to use on the glass tiles in the backsplash. Anyone?

yes. 511 impregnating sealer. or AquaMix Gold. make sure whatever you buy says its OK for polished marble.