Obsidian is a natural volcanic glass and a strong protective stone. One of its best properties is cleansing your aura, by drawing out the negativity and stress from your life.
Its powerful metaphysical properties make it an essential at protection you and your home from bad energy, especially in the form of a tower.
Many peope will place Obsidian in their entrance hall, or close to the front door of their home.
I will choose your Obsidian Tower intuitively for you. They weigh between 120-140 grams.