Answer:
Glittering points that downward thrust. Sparkling spears that never rust.
The moon is my father. The sea is my mother. I have a million brothers. I die when I reach land.
A dragons tooth in a mortals hand, I kill, I maim, I divide the land.
I am the fountain from which no one can drink. For many I am considered a necessary link. Like gold to all I am sought for, but my continued death brings wealth for all to want more.
Different lights do make me strange, thus into different sizes I will change
People take me on walks and I run and have fun. What am I?