"Poor girl seems to be losing her mind. She’s always losing that necklace it seems. Makes me wonder why she takes it off at all." - Concerned Mother in regards to how absent minded her daughter has become
Behold, the luminous isle of the Sapphire Eyed maidens
Topaz you say, looks like a good quality citrine to me. I’ll give you 8 pieces of silver for it.
Galvinus driving a bargain.
Fist sized diamond made famous by the thief Tolky. Stole the ‘rock’ from the Archmage Olikan and made it famous when his hidden thief’s den was found and destroyed by Olikan. The rock was never found though and Olikan searches for it to this day.
A casual remark by one of the party about something met on a previous adventure leads to a summons to and grilling by the Mages' Guild (or equivalent), probably resulting in an expedition back to that area to recover the things for 'study' by the Guild. The party's presence will be 'requested' for this expedition.