The pattern looked interesting so I thought I would give it a try. It turned out larger than I imagined - it's about 7 inches from point to point.
The central hexagon is from a pattern called African Flower by Lounette Fourie and Anita Rossouw. It can be found on this site (it's the 9th comment from the top!), but I think there should be a better pattern around, certainly Ravelry has some others listed.
The pattern for constructing the hexagon is by Daniela Herbertz and is available as a free Ravelry download. Details can be found on my project page here.
I wish there weren't so many tempting patterns out there - I am weak and easily distracted!