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 has wings, but can not fly. Is enclosed, but can outside also lie. Can open itself up, or close itself away. Is the place of kings and queens and doggerel of every means. What is it upon which I stand? Which can lead us to different lands.
My first is second in line; I send shivers up your spine; not quite shining bright I glitter in the light.
I run through hills. I veer around mountains. I leap over rivers. And crawl through the forests. Step out your door to find me.
Within, I clean all that is bad and is old. I make juice that’s the color of gold. Should I die, a filter machine would you need assembled to replace me and beans I resemble.
If it’s information you seek, come and see me. If it’s pairs of letters you need, I have consecutively three. What am I?