Answer:
Mostly worn by women or girls, this is sometimes shiny like silver or gold, and sometimes it is made of pearls.
What goes trough your head but you forget it like 3 days after?
A squiggly line tells you when you've done it wrong
Once you know it exists, it no longer exists. What is it?
In birth I spring forth, in life I unfold. In death I wilt and die, but rebirth restores all.
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.