I installed Carrara dog bone tiles in my guest bath and Calacatta basket weave tiles in my master bath.

My tiles were ordered through my designer but she purchased them at Emser which is also a retail source. They have a retail store in my location but I actually looked at Carrara and Calacatta tiles at another place when I was selecting my marble slabs.

Unlike marble slabs, one doesn't need to "select" tiles as the tiles themselves are variegated although I would imagine one would order a sample and/or take a look at the stuff in person. I relied on my designer, my GC and the tile setters to do quality control of the tiles when they arrived and also set the tiles out they look well. However, with smaller tiles, I am not sure that kind of color matching is as important as with large tiles in which the individual pattern of the tiles needs to "go" with adjacent tiles.

I relied on her expertise in terms of purchasing from a reliable supplier who sells good quality materials.

FWIW, here is a picture of my floors - I especially like the Calacatta tiles because they have gold warm tones which complement the warmer tones and other tile work in my master bath.

Here are some pictures of my master bath - They aren't the greatest shots because I wasn't trying to highlight the floors but it might give you some idea of why I like the Calacatta. My Calacatta tiles are honed as is my marble slab because I wanted a "softer" look in the mater bath. I used polished Carrara in my guest bath and that is gorgeous but that room has a more "glitzy" feel although it is still traditional in feel since it has the same wood cabinets and a copper sink.

This is the master bath looking through my doorway. It's a small bath in an urban high rise.

You can see how the Calacatta tiles have warm gold as well as gray.

This is a view of the shower floor while under construction. I chose to have the same flooring so as to not chop up the space as much as possible.

Here's another view with the floor kind of peeking out - I am posting because it shows why I deliberately opted for Calacatta because of how it complemented the rest of the colors in my master bath.

Gorgeous! Thanks for sharing!

I wanted to add that I have no idea what brand of grout was used but I did select the color and on the advice of my designer selected a light gray which blends with the marble and also is easier to keep looking nice since any normal wear and tear is just going to blend versus a white grout which will show if there is any dirt or discoloration.