You can create a photo tile that looks even better, in my opinion, than engraved granite at less than half the cost.
The tiles attached are white glossy ceramic wall tiles from home improvement store covered in spray paint.
The the pet pictures are done with a glossy black spray paint on a 6x6 tile.
The tile with the couple in the loft door is done with a Rust-oleum brand spray paint, primer and paint in one. The color is Oil Rubbed Bronze. The tile size is 9 x 12.
After spray painting I let the tiles dry for a day. I processed my pictures through PhotoGrav, then through my 30 watt laser, I ran them at 30% power and 80% speed at 1000 dpi.
I find it far less annoying to ruin a $1 tile than a $10 piece of granite.
The pet tiles where my first try.
The idea was not originally mine. I got the basics of it from the project files on LaserU.com.