You know, i wonder how many "objects" t's have lost over the years to their clientel. Maybe that is why they're strict when they say it? Mine did the same thing with the crystal... she said "I have something... Well... (like she was doing this against her better jedgement) I have something for you... (stops, chuckles to her self) ON LOAN... that you'll bring back when I next see you in two weeks".
Time literally stopped and i started panicking, thinking of the hippo and krazybean's box....
Then t got up, went to the little table where the 4 crystals were and said i could pick one. I don't remember after that, my heart was beating too fast.

But seriously, maybe they do lose stuff to other unresponsible clients all the time.