Our backsplash is "Prairie Falling Water" made by Stone and Pewter tile company, purchased at Mosaic source:
http://mosaicsource.com/slatetile.aspx
There are several different color options, as well as different pattern and size options. I popped out tiles randomly here and there and filled them in with translucent glass tiles ("bars") from the same company.
I used Honey Silk (yellow), Sage Silk (green), and Tiger Eye Silk (red), according to my order. I used two sizes, as the rows within the fallingwater tile are not the same height. I think that they actually sell the falling water tile now with pieces already popped out for you. Not sure, but you could look into it.
Mini Flat Bars:
Honey Silk 1"x3"
Honey Silk 3/4"x3"
Sage Silk 1"x3"
Sage Silk 3/4"x3"
Tiger Eye Silk 1"x3"
Tiger Eye Silk 3/4"x3"