Stone Impression's new line of environmentally friendly accent, mural and border tiles are made of an advanced composite using recycled materials including post-industrial metal shavings, water bottles, demolition wood chips and recycled glass.
Stone Impression tiles are created using an exclusive artist-developed process to hand print almost unlimited designs on stone. They have a huge selection of designs. Read more about their new eco-friendly tiles at their press release here (it's a PDF).
They aren't 100% eco as they do contain some cement. But another perk is that they're half the weight of concrete tiles making for reduced transportation costs and easier installation.
Below are a few examples: