This Black Tourmaline specimen (with mica) weighs 12oz and measures 3.5x3.5x2"
"Black Tourmaline is a protective stone which repels and blocks negative energies and psychic attack. Black Tourmaline also aids in the removal of negative energies within a person or a space. Black Tourmaline will cleanse, purify, and transform dense energy into a lighter vibration." - Healing Crystals
This specimen is from Brazil.
To clean/cleanse, leave out under the next full moon.