Fat Quarter Shop had this pattern in their latest email and it inspired me to create the above. It uses a 4.5″ HST from the 12″ Hunters Star collection and 4.5″ sashing. The border consists of equilateral triangles and 60 degree diamonds, but I’m not sure of their measurement at this time. It can easily be made without the border though.
Edit: Looking at the Storm at Sea 12″ collection, it seems like the border could easily be made using a 4″ border!