Green Ice is not at the same level than other frozen weapons. I think green ice is 32 and the others 30, or the other way around. I havent traded that for two months, cant remember. Names are the same though, but they are green (light green) instead of blue. I think a nice addition would be to post a picture of these weapons indeed, agree with Roc on that.
I have personnally spent a lot of time farming green ice, and have had very little luck. Perhaps giving some stats would be interesting if available. This is a really rare loot and I question whether or not this is worth it. Last time I checked the staff was worth, what, something like 200-300 in CS. From my experience, this felt like farming for dragon, and a dragon is gold cap if not more, so I;d rather farm dragon now (I know I know a lvl 30 cannot farm dragon - but hey, life is unfair).