I am seeking a plaster 3-D wall panel that I have seen in high-end restaurants and clubs. It's modular, and makes the walls seem as though they are hand-carved in "waves" of plaster. They are like large tiles of plaster with a deep surface texture that plays very nicely with the light shining from above.

The seams are "grouted" with a plaster as well. These weren't around when I was in arch school. Does anybody know what I am talking about? Can you help point me to a website?

Thanks!