UO Second Age

I recently found some yarn that looks different and will not stack with other normal yarn. Is this some kind of special yarn? If so how much is it worth? Thanks

Its probably yarn spun from bloody wool. bloody wool comes from killin a sheep before you sheer it.

also there are many idff types and shapes of yarns that dont stack with each other, chcek your tailor

also they need ot be the same hue to stack i think