Blue Dragonhide

Obtained from felling lesser blue dragons. Can be processed at the tannery.

Blacksmiths hate this one simple trick. They spend their lives mastering interlocking chains and plates, only for dragons to be born with them. A third of the blacksmith's punters are now gone, hunting for dragons rather than dropping some coin at their forges. It's enough to make a blacksmith sob into their anvil. 

Blue dragons hate that one simple trick too, of course. Their venn diagram overlaps with the blacksmith's: they'd rather people got their armours from somewhere other than dragons