This rosette is a design by Jon Yusoff. You can find the free pattern on her blog: http://tatsaway-patterns.blogspot.com/
Thanks again Jon for sharing yet another beautiful design. I used Altin Basak Size 50 thread that works up between a Size 20 and 30. It is a very nice thread to tat with and comes in many lovely colors. This is my motif # 24 the second time around.