I ordered some Seiryu stone for a certain project and got these by mistake. Aquarium co op emailed me back right away and sent me the right ones-AND let me keep these too! They really are pretty once you get them wet, all these awesome greens, oranges and streaks of dark brown show up. I ordered 10lbs and got three good sized stones about 10 inches across, six inches wide and about three inches thick, plus two smaller pieces and a couple of chips that came off during shipping that I can still use for something. I'll definitely buy stones from this company again!