Green Stone I

I test the seasonal rains to see
if they construe how light matters.
Each evening as the clouds happen,
I place a green stone on the sand.
As the blue clouds reverse the day,
I watch the stone lose its radiance,
the prismatic animation rolls slower
and slower against the bed of sand.

The rains eliminate shadows; the stone
absorbs seven minor beacons of light
until the evening rains cease. A backlash
of green light rises from the bed of sand:
the wet stone begins to refract dim light.
It pushes one ray of light away from itself.

Each evening, one stone sits on a hard bed of sand,
and the seasonal rains create a halo from refused light.