Here is a black obsidian carved crystal sphere. It is an interesting crystal as in it didn't seem to know if it wanted to be a spiderweb obsidian or a rainbow obsidian or just black. It has very interesting formations when you look at it in the light.

Obsidian, in general, is truth-enhancing. A strongly protective stone, it forms a shield against negativity. Obsidian draws out mental stress and tension. It stimulates growth on all levels, urging exploration of the unknown and opening new horizons. Obsidian brings clarity to the mind and clears confusion. It helps you to know who you truly are. Obsidian promotes qualities of compassion and strength.

Black obsidian, in particular, is a very powerful and creative stone. It increases self-control. It forces facing up to one’s true self. It helps release imbalances and negative energies. Black obsidian is protective and provides support during change. It repels negativity and disperses unloving thoughts.