Round Placemat and Coaster Crochet Pattern by Crochet Cricket. This placemat set works up quickly and will bring a vibrant splash of color to your table. Whether in summertime pastels or deep autumn tones you are sure to love these gems. No time, no problem! You can complete one place setting with just one skein of yarn in about 2 hours for an advanced beginner. That includes the placemat and the coaster for a full setting. These place settings are great for small spaces measuring a modest 9.5 inches (a little over 24 cm) in circumference. They are also very satisfying to work on. Working with a nice metal hook the yarn slides across like butter.