What a beautiful snood with headband!
From the picture, the headband is all single crochet (sc)with a shell stitch border on the side I can see. The net part looks like sc over chain loops.
The closest thing in appearance to the band that I can think of is garter stitch. There may be a knitted lace border that resembles shell stitch, and there also may be a knitted lace pattern that you can substitute for the crocheted net.
You can check the online stitch patterns directories to find the ones you like. this is only one of them. http://www.knittingonthenet.com/stitches.htm