Answer:
My rings are not worth much, but they do tell my age. What am I?
I am black when you buy me, red when you use me. When I turn white, you know it's time to throw me away. What am I?
I have 24 keys but cannot open any locks. Sometimes loud, sometimes soft. What am I?
It's been around for millions of years but is never more than a month old. What is it?
I was was before was was was.
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.