The guys were back at my house today. They got the 2nd half of the floor poured. I got to watch part of it, it's going to be a great floor when we get it all done.
Step one is the pour the concrete, 1 wheel barrow at a time. That's a lot of work. This concrete has a dark gray dye in it. It will get a bit lighter as it cures, but should be a 'smoke gray' when it's all said & done.
Then, after it's set up for a couple of hours, the guys are sprinkling some aluminum filings and black glass chips on it, then trowling them in. Once the floor cures for a month, we'll polish the surface which should expose the aluminum & glass to give the floor a bit of sparkle.