I think cherry glass would cheapen it. Have you considered a mirror glass, don't know if I would like to maintain it but others here swear by it. Tiles like Earp Bros suggested look good. I also like the glass mosaics but they might be a bit blingy for your room. I went back to laminate for my new kitchen and I really don't think you can beat it - it just looks so clean and uncluttered, and better still, it doesn't break the bank. Congratulations on a beautiful job.

Sorry but the water line blue and white flowery tiles look old fashioned and if you're going for that kind of sandstone on the top it won't go with the terracotta tiles you have already Do like the pool and tiles that Hayda Natural Stone have posted Very nice!

there is also a difference between ceramic and porcelain tiles - often these issues come down to a combination of (a) tile batch size/consistency (b) tiler's skill/capacity (c) communication in that if the tiler opens the tile box and he can't practically achieve what he thought he might because of the general discrepancies in size then they should at least speak to you before they start. So often with many issues in this game, it's about managing people's expectations and having open/honest discussions at the right time. When this breaks down, problems and disappointment is more likely to occur......so coming back to it, if you have high quality porcelain tiles that are millimetre perfect, square and flat then the capacity to lay them with minimal spacing is higher. Also the substrate/prep plays a part as if it's all out of whack and not perfectly straight/plumb/square then you'll be in all sorts trying to achieve the minimal tolerance detail.

the black marble with white stone veins through it. the picture you uploaded seems to have a name of milky way on it.