Image from source
It's not quite the "transparent aluminum" Scotty talked about in Star Trek IV, but you've got to admit, this is pretty cool! I get to see a wide variety of unusual, custom materials in the sign industry, but nothing quite like this.
See-Through, Light-Transmitting … Concrete?!
Concrete has a sometimes-bad reputation as a harsh, rigid, cold-to-the-touch and straight-edged material. Litracon is doing a great deal to change that image of concrete through a score of creative and sustainable applications for their patented light-transmitting concrete. . .
Found at: Asylum