If it exists without special ordering it from the quarry, I'd imagine you'd have to go to some place like Walker Zanger, Ann Sacks, or places like that. If it were me, I'd pick up the 12x12's and cut them up. As for the bevels, you can always use 400 wet and dry on a sanding block to put the bevels on after cutting.

I did find the 6x6 in the Alabama white marble. I don't know what the shipping price is but the per square foot price is $7.50.

Bill, adding the bevels doesn't sound so bad except that for this particular floor I won't be doing it and it sounds like something that could be expensive to pay someone else to do.

Neither Walker Zanger nor Ann Sacks carry smaller squares. They have other sizes, very small, larger than one foot square, and some other misc. sizes. Well, cutting them up may be the way to go unless I like the Alabama marble.

That sounds like a pretty good price to me (the Alabama white). Not sure what it looks like, but even buying 12 X 12s and cutting them wouldn't come close to that.