I don't usually search for scarves, since I knit and crotchet myself, but I was trying to imagine how i would search for one if I did. I took this one as example
http://www.etsy.com/listing/127798116/chunky-crochet-scarf-spring-scarf-circle?ref=shop_home_activeIf I were looking for that, I would probably search by either color or style so more like 'violet circle scarf'. To me, that should be your first three words.
Thats what I try to do with my titles, is imagine how someone would search for that specific item and use those three words as the beginning of my title. At the very least I would probably use 'chunky violet circle scarf' since most people dont know the different between crotchet and knit, I wouldn't use that as a main search term. Hope that helps! :)