Alright, I joined the Thieves Guild, but only because I had five of those "Unusual Gem"s in my inventory, and I wanted to get rid of them.
Now I find that they're "Stones of Barenziah" or whatever, and that there's 25 of them, and I CAN'T TAKE THEM OUT OF MY INVENTORY UNTIL I FIND ALL 25.
Now I find that they're "Stones of Barenziah" or whatever, and that there's 25 of them, and I CAN'T TAKE THEM OUT OF MY INVENTORY UNTIL I FIND ALL 25.