Your heart is a diamond

Your heart is a diamond
It got through my walls
Walls I thought were my protection
But were my persecution
You made me realise they were walls of a prison
Your heart is a diamond
It humbles me
And the light from that precious diamond has a funny way of extinguishing my flame
So powerful it can break through steal and yet so soft it can melt it
I thought I was high and mighty
But your love brought me down
And made me human again
I found myself in you
I can run through myself again
And it is you who is doing that
Your heart is a diamond