Answer:
A precious stone, as clear as diamond. Seek it out while the sun's near the horizon. Though you can walk on water with its power, try to keep it, and it'll vanish in an hour.
What can be heard and caught but never seen?
I have four wings but cannot fly. I never laugh and never cry. On the same spot always found, toiling away with little sound.
There is a puzzle which can be asked all day with a different correct answer each time. What is the puzzle?
I can be quick and then I'm deadly, I am a rock, shell and bone medley. If I was made into a man, I'd make people dream, I gather in my millions By ocean, sea and stream.
I have two eyes in the front and a lot of eyes on my tail