Epidazzling is a common cosmetic accessory in the Cosmic Era
"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.
The Yugzhee, or "hedgehog-people", guard a great, secret treasure inside their giant burrowed lair. The mysterious Wall of Keys, a 12'x10', foot-thick, cold-iron, "wall", upon which, on iron hooks, hang 100 ornate iron keys of all shapes and sizes. Each key opens some heretofore un-openable barrier, door, or gate, in the particular game world of choice.
The PCs have come upon a great boon, except for the fact that the keys cease to function properly if separated from the iron wall for more than a few minutes. Higher level characters will be able to figure out how to take the wall "with them" via magic. Lower level characters will have to get creative.