This is an Elizabeth Hiddleson pattern called Sunny Mood. It was published in one of the Decorative Crochet or Magic Crochet books. I'm sorry that I don't know which one. I had made a copy of the pattern to work with and failed to note which book it came out of. If I made this doily again, I think I would change the final round to shells, or something similar. It is made with Alkin Basak thread, size #30. I had purchased some of this thread from Demet on ebay. (She is now on Esty) The thread is from Turkey and is wonderful to work with if you are comfortable with size #30.