Thanks for sharing :)
I love skull crystals. I have a deep communion with crystals and in my tribe we have worked many hours listening to their stories and learning about them. There are uncarved crystals that hold the properties of skull. You can find them in all sizes - tumbled stones that retain the shape of a skull - and larger ones - that are not shaped like a skull with natural terminations but definately hold this energy.
My Field of Dreams voice reminds me I am to be a crystal skull (we all are). I choose to be citrine as it does not hold negativity.Blessings.....