"The Blizzard be strong outside, lads; settle yehself in and breathe the steam; we'll pass the time with a story."
An ancient shrine of a mischievous goddess. The proper offering will give you her blessing, but 'ware you don't feed her wrong!
A new substance is found in an out of the way area and kept very quiet. It is found to make a perfect counterfeit diamond. Only the most expert of expert appraisers would even have a hope of noticing that it is fake. Only one problem: if it gets wet it starts to slime and if it is saturated, it turns into a glob of gel.