Such a beautiful quilt! I would love to have that pattern or find out the name as well.
I see a white square in the lower left corner and then logs built around the side and top like a log cabin.
After that is complete, two white squares attached to each corner, flipped back and then cut to make this design.
That is what I see and I could be wrong but I think I'm going to try a block with some scraps.
The colors in this quilt really make this star explode. Awesome!