They are not “supposed” to do anything! The situation is there for them to make of what they will. Could they swap the rubies over and “rescue” Iridne back to the elves (probably incurring her wrath)? Yes. Could they just steal the clasp as use it as a magic item? Yes! Could they do a deal with Iridne and lead the Orcs into climatic battle at the end of your campaign, changing the Forbidden Lands for ever? YES!
Effekt - A fan podcast celebrating Swedish RPGs including, but not limited to: Alien; Coriolis; Forbidden Lands; Symbaroum; and Tales from the Loop. Featuring discussion magazine episodes and Actual Play recordings. https://effektpodcast.org/