It looks like it would be a good hand-piecing project.
I think it is made of - two shapes - an even sided diamond - 60-120-60-120 degrees - and a square with the same length sides as the diamond.
It could be constructed sort of as a "falling row" - and then the rows joined together. If the pieces are big enough, I think it could be machine sewn. Just have to stop 1/4 inch from the ends.