We are emeralds and diamonds,
Lost by the moon;
Found by the sun,
And picked up soon.
Shifting, Shifting, Drifting deep.
Below me great and mighty cities sleep.
Swirling, Scurlling, All around.
I'm only where no water will be found.
Select a pack of riddles and try to solve it in an interesting way.
This riddle appears in the following downloadable PDF files: