I would like to find the weight of a certain yarn, A taste of glitz by K1C2, so that I could use another of similar weight. Is there a website that would help?

I checked the Knit One Crochet 2 (K1C2) website and could not find the type listed there. I was wondering if it was of similar type to size 10 crochet cotton or size 5 pearl by dmc.
It is used in the Crochet for Barbie by Nicky Epstein.
Thank you.
Christine