And, preferably use a medium to dark grout, to reduce the chances of spills and spots showing on the grout.

Apply sealer between your glass tiles to extend the life of your grout and avoid unsightly stains. Wait for 10 to 15 minutes before spraying a second coat of grout sealer over your glass tiles. So, for the rest, should we stay a quarter to three-eighths inch away from the countertop and cabinets and caulk?

Depending on the area of your splash this should take at most 2 hours should you have to individually clean each glass tile.

Floor tiles are likely to get wet often – while washing floors – whereas kitchen backsplashes, not so much. Apply sealer to the grout with a sponge if you are working in a larger area or on a flat surface.

Wipe the excess sealer from the surface of the glass tiles with a clean, lint-free cotton cloth. I am in the process of doing a marble backsplash in the kitchen and just finished the tiling, and will grout tomorrow.



Source: diy.stackexchange.com/questions/18571/how-to-seal-marble-tile-mixed-with-glass
genaTiles
And, preferably use a medium to dark grout, to reduce the chances of spills and spots showing on the grout.Apply sealer between your glass tiles to extend the life of your grout and avoid unsightly stains. Wait for 10 to 15 minutes before spraying a second coat...