Glasstilestore.com is a website that sells an enormous variety of glass & stone tile at very competitive prices. Their tile styles include stained glass tiles, marble moldings, metal borders, cobblestone mosaics, and virtually every other type of tile that you can imagine. Prices are mostly between $6 – $15/square foot.
Here are a few photographs of tiles offered on their website:
Sierra Spruce Blend
Nimbus Gray Blend