Answer:
I love spinach.
What gets sharper the more you use it?
My first is second in line; I send shivers up your spine; not quite shining bright I glitter in the light.
It's been around for millions of years but is never more than a month old. What is it?
I am seen in the water. If seen in the sky I am in the rainbow a jay's feather and lapis lazuli.
A word of five letters, Upside down is the same, A shark does this, But itβs not to blame. What is the word?