It could very well be a "ten-minute", aka "dimensional bowtie", block. I've seen a Youtube video, which I can't find for the minute, showing a variation using HSTs as the blocks and a plain square for the center. It can also be done with pieced strip blocks or any other kind of block - the technique used to set in the center is the same.
I like the border on this one - it gives me an idea as to how to finish my top!
http://www.quiltingboard.com/main-f1...ml#post5337432