The French Star quilt block is a pieced design. I found an old pattern by Ruby McKim, a contemporary of Nancy Cabot. McKim's original full size pattern can be downloaded here. The block is 11".
This pattern is cut using templates. It would be a good design to hand piece if you like to do that. There are several "y" seams and it is a little harder to put together. This is not a beginner block.
You can download my templates here. French Star can also be found in Electric Quilt's Blockbase program as #3540 which is what I used to make my block.
Here are the main parts to the French Star block and how they go together-
Make four of the sections as shown above and sew them together like shown below-