Answer:
A precious stone, as clear as diamond. Seek it out whilst the sun's near the horizon. Though you can walk on water with its power, Try to keep it, and it'll vanish within an hour.
What is the freedom of birds and the pen of old men?
I bind it and it walks. I loose it and it stops.
I am cracked by Indiana Jones. What am I?
I weaken all men for hours each day. I show you strange visions while you are away. I take you by night, by day take you back. None suffer to have me, but do from my lack.
What never gets any wetter no matter how hard it rains?