Every trader, huh? Even the ones on Lady Vengeance? If you can't sell it, report the bug and leave the necklace on the ship somewhere.
Not every trader, by the way. But just random people like questgivers can trigger alarm. After that everybody in the vicinity becomes 'red' at the minimap.
It doesn't matter if I have the necklace or not, the character is some kind of cursed now.
