With crochet scarves, gauge, yarn, and hook size are not critical. You can experiment!
The yarn is a discontinued yarn (Ardore) from Trendsetter Yarns, which I picked up on sale at Tuesday Morning. Tuesday Morning has beautiful discontinued yarn from time to time. When you’re next in the store, find the craft section, and see if there’s yarn that you’d like to use to knit/crochet a project. If there is a Tuesday Morning outlet in your city, that’s the place to go to find yarn!
I felt the scarf was incomplete without edging. The pattern for the edging can be found in I Love Crochet by Rachel Henderson & Sarah Hazell. This book has a lot of cool, easy crochet patterns.