I'm fascinated by the block and also the setting which is very clever. At first glance, I see the colours and the circles then I see the grid that's been overlaid on the blocks.
Upon closer inspection, this has even more layers, check out the light value of the half blocks surrounding the outer edges of the quilt that serve as a border but tie in with the main blocks.
Look even more closely and there is a square on point right in the center to bring the eye back . They were achieved by the effective use of value and in the four outer points, light values were used in a quarter of the circle.
Here it is again. Now take another look, (you may have to click on the photo) and see if you can pick that there is yet another element not so obvious. On the two diagonals of the quilt, another quarter of each block has a different colour arrangement in the corners. This time they are as a square as opposed to a triangular section. Clever I tell you! Even the sashing isn't just a straight strip.
The block is easy to draft so I had a go at playing with the pattern. Only the block in the bottom left of the photo is accurate, the others were a failure because of the troubles that dividing the block and doing the white sashing gave me.
You can see the different shape of the sashing in two corners.
The Japanese quilter appliqued the blocks and I suspect that they were done in quarter sections. Even the sashings were appliqued. I did mine mostly by machine with the smallest amount of applique at the very end. It took a lot of trial and error but I finally worked it all out and what a satisfying exercise that was. If there was enough interest, I could do a run down of my process. I may or not do the quilt but it was fun testing it out.
Remember my Candied Hexagon quilt? I hand pieced all the blocks in this quilt from a pattern in a magazine that's no longer available. The pattern was not accurately printed in the magazine but I had no problems until it came to the border. I got there with a bit of fudging but it reminded me of something very important.
Always do a test block from any pattern before committing to cutting for a whole quilt. Some magazines have testers that test blocks but they rely on the printers to get it right so don't assume they got it right.
Unfortunately, Australian quilting magazines have a reputation for having many patterns that are printed incorrectly.
The same goes for books. I like to check on google for any errata for books I may have purchased. The first printing of Freddy Moran's houses book had every single template wrong and the correct ones were made available via a download on the Internet.
I have a piece O' Cake book, Applique Delights that had the same issue.Quilts in the Barn for some important pattern corrections. In fact go and visit anyway, she has written this great blog post about that experience.