These are the rare stones found in the Earth.
I stumble upon them and initially have no idea of their worth.
Some glow in the dark and light the way when its dark - with all my heart I wish I can return the favour in some way.
Some provide me with spiritual energy, just enough to keep me going when I'm down - without these ones, I don't even want to think about where I might be right now.
Some somehow change colour with my mood.... despite what I say/do they see through it and understand what the inside of my heart looks like - these especially I've heard are fucking rare, I guess I'm damn lucky.
To all of them I say thank you. I treasure them all and hope that they know it.
Their worth? To me, every single one is beyond priceless.