I'm pretty sure it is easy. I just went looking in my sewing room for a pattern i have somewhere, called shattered ... something. can't remember what. but i think it's star points sort of like a New York Beauty block. anyway, if I find that i will let you know. you can have it, i will never get around to making it. i will let you know if i find it.
look for more info on this one you are interested in. i'm sure there are tutes on doing it or free block maybe on quiterscache. good luck. CC