This is made by Realstone systems. Carbon Honed stone panel is a natural stone veneer made of rich dark grey limestone with a honed finish which brings out the subtle yet intriguing natural patterns in the stone. This is great for a backsplash in the kitchen. Or accent walls in the bathroom. It could also be used in a pool or spa. or bathroom shower installation. the material is rated fully submersible. I payed $25 a square foot for this material plus shipping. I have 7 boxes left. Approximately 42 square feet. Will sell for $10 a square foot. Call or text for questions