Try "The Hunt." It's a community that is dedicated to identifying and finding clothing and fashion accessories people are looking for.
Looks like an Alexander McQueen Gable boot: http://www.alexandermcqueen.com/us/alexandermcqueen/boots_cod44669119ec.html Very expensive. Probably cheaper clones out there.
That's a nice boot. I find them a tad feminine with the buckles (that's NOT to say a men could not wear them, just an observation)