There's a new exhibit of fabulous Turkish tiles, old and contemporary. This link tells about the show and has links with some background on technique too.
Here is a link that might be useful: Iznik -- A Garden in Quartz
that exhibit looks phenomenal and it just so happens that i will be in nyc the w/end of feb 25/26, so i intend to check it out. thx for posting about it.
I can't go to the show, Hope you make it and will let us know about it. It looks fairly small, but the works are sooo wonderful, at least in pictures.