Looks to me like a Terrazzo. If you have a local tile shop, take the picture with you and show it to them, and they could probably get you the same color and brand. Also helps to know where you got the picture from, due to there may be a materials list associated in the article it was in.
__________________ Ren: Now listen, Cadet. I've got a job for you. See this button? Ren: Don't touch it! It's the History Eraser button, you fool! Stimpy: So what'll happen? Ren: That's just it. We don't know. Maybe something bad, maybe something good. I guess we'll never know, 'cause you're going to guard it. You won't touch it, will you?