Quilt nearly queen size (by the time I added the borders) and will be used in our reading nook. I have the rest of the blocks to make another quilt too, instead of making one big quilt! My fabrics were cottons in red, hot pink, white and black with tiny hearts of red, pink and purple. I used the 12" blocks to make a smaller version of the full sized quilt by sewing five horizontal rows and five vertical rows. The black fabric was for a 1-1/2" inner border. I also ncorporated all 4 of my colors in the piano key border. The empty spaces in the diamonds were calling to me, so I machine embroidered red hearts in the centers that mimic redwork. I also made smaller 5" pinwheel blocks which I used in each of the 4 corners of the quilt. We have a queen sized sleep sofa for our grandchildren and this quilt will be warm and cozy for that room. Thank you Nana for the fun mystery quilt!