These are the choices

I have a mosaic in my kitchen that is a mix of stone, 3 colors of glass and stainless tiles. I only did my mosaic behind the range hood and ran it to the ceiling. I love the way it turned out and I have gotten tons of compliments on it. I am telling you this so that you know I am a fan of mosaics but my first thought is that in your kitchen the mosaic would be too much of a good thing and might distract from your beautiful cabinets and granite. A backsplash around the entire kitchen while often done isn't really necessary. Usually the greasy splatters are behind the cooktop. In other areas you should be able to get by with just paint. So I guess I am suggesting that you think about maybe just using the mosaic behind the range hood. If you feel you want tile in the other areas maybe just pick the lightest color of the glass in the mosaic and use that in a bigger size between your cabinets and countertop. You could run the mosaic vertically in the area behind your cooktop/range and hood. (And if you want other tile for the rest of the space it could run horizontal) Below is a picture of how I used mosaic in my kitchen.
{{!gwi}}

The tile looks fine. I agree the smaller sized mosaic will look busier than the larger one, but it's really the multicolor mosaic that is adding complexity to your complicated stone. You've got brown and cream from the stone along with that pinky taupe that matches your wall color - good choices, but perhaps a few too many colors.

Another option would be to choose a mosaic that is one color with different sizes or interesting placement, or one size with a variegated glaze for interest. Or, you could pull out just the cream and brown of your stone and add a pattern for interest.
Shell glass mosaic

Crackle diamond mosaic

Marble diamond mosaic

Here's what these tiles look like in your image.

Have you thought about a pretty solid backsplash? I think both back splashes you have picked out compete with your beautiful counter tops. They make some great solid subway tiles in glass which I think would look great. You could pick a solid color from one of the flecks in your counter.....

Interesting points of view from everyone. Definately some things we did consider and some we didn't

EAM44- the last pic didn't come through.
its funny, the first tile we picked was a 1x2 subway of that is a sister of that crackled diamond tile you showed. Same color alternating with a soft gray.

we were afraid that picking a single color back splash would be too boring looking, but I'm also afraid of making to too busy

The colors in your mosaics look nice, but my first impression was also "too busy." I like the first one EAM posted. I think you'd get enough variation with a solid. I know what you mean about worrying about it being too boring-- I have the same thought about some of my choices. I just think you have enough going on visually without adding another color-varied element. Take a good look at the mockups above-- maybe print them out in black and white and see if that helps.

I think you will be sorry if you install either one of those. I agree that they will compete with your already busy backsplash.
I hear that you don't want more beige but with your busy granite a light cream or a light tone that matches one if the lightest colors in your granite would work. Honestly, your kitchen is anything but boring now and a simple backsplash is not going to turn it in a boring kitchen.
I have been a member of GW for almost four years. I have never seen anyone who has chosen a backsplash like yours coupled with a busy granite like yours actually keep it. What I have seen over and over is it being torn out and a more simple backsplash installed .
What we like to say here is that the kitchen should have only one star . Yours is the granite.
In order to pull off the mosaic, you would need a solid or almost solid counter.
Not what you want to hear, sorry but I have to be honest.

i agree with others...the tile you picked out is pretty on its own, but not so much with the granite.

i would go with one color tile and find a pattern that you like and do the b/s in that pattern.
remember, you will have things on your counters so that will increase the "busy-ness".
you can have a gorgeous b/s without it being "loud"...beautifully understated.

good luck!!

In EAM44's mock-up of your backsplash choices, the tiles you picked look very pink compared to your granite. It may not be like that in real life, but it reminded me of an old thread where a woman was very unhappy with her new backsplash after it was installed She had a busy granite and backsplash that competed with each other. I also think that a less busy tile will look better with your granite.

Here is a link that might be useful: Hate my new backsplash

we were afraid that picking a single color back splash would be too boring looking, but I'm also afraid of making to too busy

Yeah, hard line to walk. (I am struggling with this myself in another thread that people are generously helping me with.)

I think you are on the right track, but need to do more playing to find the right balance. For example, perhaps you could use those pretty 2x4s (or even find 3x6s) but have one of the colors predominate. Use mostly one color, but add in only a small number of the other colors. (Of course, this would mean you would need to buy individual tiles rather than the mesh-mounted mosaic, but that should be doable.)

love the diamond tiles above. The diamond crackle and marble diamond mosaic. Either of those would be gorgeous. With an edge to the simpler one.

I too have been reading AlOT about back splashes here on GW. Nobody seems happy when they pick out a busy back splash to go with their granite. Some have even torn everything out......Your kitchen is so beautiful that a solid color back splash would never be boring, just classy!

See the crackle tile we were originally considering

Closer

Not sure if this is better. I was thinking about using the 2x4s on the right as a field tile then using the other there as an accent. But don't know about what pattern

The original crackle tile will be fantastic.

Love the original and the plain subway tile - much better choice in my opinion!

Wow, I think either of the last two tiles would go really nicely. I think you could do all of one, all of the other, or a mixture (as long as not too crazy) as you suggest. They both seem to complement, rather than compete with, the granite.

Seems much better than the multi-colored tiles in your first pix.