I'm no tile expert, but just wanted to say, that I love your pics. I've never seen terrazo used as a backsplash. It's just beautiful. I'm thinking if you grout the same colour as the main tile colour, the lines will disappear and the difference in width won't be noticeable.

Nice looking backsplash. I agree with Daisychain to use the cream colored grout.

I agree too.

I love terrazzo and your idea for using it as a backsplash. Agree with others to find a grout that matches the primary color in the tile. Enjoy - it's going to be beautiful!

That looks nice, and it's refreshing to see someone do something different. Agree that a grout same color as background is the way to good.

I have the same rock pattern for a bathroom counter I'm doing. I'm hoping the fabricating goes okay! And that it doesn't stain. I just love Concrete Collaborative and how you have it as a backsplash!!! What type of grout did you go with? I have different terrazzo tile for my kitchen floor and I think we'll have to experiment with different sealers.