Free crochet coaster pattern using one color. Chart only, but very easy to follow (nothing more complicated than a double crochet). I had some leftover turquoise nylon/acrylic blend DK yarn and decided to make a doily to put under a glass bottle on my vanity. Using a size D crochet hook, this came out to 3 1/4" diameter, but I'm sure this would work with any size hook and yarn. Very pretty.