I bought the pattern from an Etsy shop. I'm sure it's available somewhere for free. I was thinking of it as another possibility for the boring neckline.
I have a bead/thread zapper that cleanly melts the ends so it doesn't ravel, as this thread is super slick, shiny polyester. It is very durable and beautiful in jewelry, and I got a good bit of it in different colors, but it makes me cuss while I use it, so I haven't made any larger projects from it. It's so lovely but it unwinds while using it--no friction. The rings are hard to keep closed as well. Something worth trying to master again, but not at this time.