Answer:
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.
Jack and Jill when up the hill jack fell down
It is sometimes known to have silver linings.
I can be short and sometimes hot. When displayed, I rarely impress.
Different lights do make me strange, thus into different sizes I will change
If lightning strikes an orchestra who is the one most likely to get hit?