The image to the left is a mosaic made by a San Francisco company called Exact Mosaics (http://www.exactmosaics.com/). It is an uncut tile mosaic made from 5/8" squares of natural marble.
I have never seen anything like this and I'm pretty much struck dumb by it. Exact Mosaics uses a pattern-recognition software to interpret a scanned image. The software actually selects the placement of the differently toned squares of marble that make up the whole piece. I mentioned yesterday that achieving curved shapes was something that was possible only with cut tile. Well, these people have found a way to do it with uncut squares and in a natural material to boot. Unbelievable.
The second photo is a close-up of the top left corner of the image and you can see the individual squares. The Romans mastered the art of the mosaic and since then, people have been using pretty much the same techniques. True, the Romans didn't have glass tile the way we do now, but even most glass tile gets used the way the ancients used colored stone. These guys on the other hand, have created something entirely new. Got to their website and gawk.