Obsidian is a very, very special stone. It is not a true mineral. It is actually a volcanic glass that forms when molten lava cools too rapidly to crystallize. It consists mostly of Silicon Dioxide. Obsidian's sharp nature made it a stone of choice in making blades and arrowheads for Stone Age cultures. Polished Obsidian was used to create the earliest mirrors. We can learn a lot about a stone's metaphysical properties by looking at it's physical properties. Being such a sharp stone, Obsidian may be a source of support in releasing attachments to things in our lives which are no longer part of who we truly are. Obsidian may be helpful in moving forward in the gentlest possible way. I suppose that is why it is often given to those who are grieving. As a naturally reflective stone, Obsidian can help us to really look at ourselves. This group of Obsidian Stones is TRUE black. For all the black crystals and stones mother nature offers us, it's actually quite rare to find a truly black stone. The richness of it's tone is spectacular. There are only a few.
I will listen for the Raven Obsidian stone who is singing for you.