Rough Stone is Good for Something (WoW)

I was wondering if the Rough Stone I was obtaining in the course of my copper mining had any value. Turns out it's used to make sharpening stones and mace weights. I've now got a bunch of those. Oddly, it seems I'll be using a fair amount of linen in the construction of weapons... go figure. I've so got to get Darzun another bag of some kind; there's just not enough room in his one bag and backpack for all of his professional tools and materials.