I have made this quilt also. It is called Hidden Stars and in the book Layer Cake, Jelly Roll and Charm Quilts by Pam and Nicky Lintott. In the book version, the squares are 4 patch. Your quilt is so lovely and makes me smile just to liik at it. Great job. I am impressed that you undertook the Apple Core quilt design. I love the design, but it looks so time consuming and all those curves...when I have more time I will tackle it. Bet yours was beautiful. Keep up the wonderful work.