I had a sales rep for Interlam in my office last week and he showed me this photograph.
I thought it was pretty cool. The image is kind of small here but it appears to be a wall made from stone slabs. I said something like "I cannot imagine how much something like that weighs." He laughed and said, "Try about 50 pounds."
That display is made from a stone laminate invented by Interlam.
Actual slabs of slate are rough cut into layers 1/16th of an inch thick and then they're bonded to a thin sheet of fiberglass. The result is a lightweight, rigid stone slab about an eighth of an inch thick. It can be used indoors or out and looks for all the world like a slab of slate.
Remarkable! Check out Interlam's website.