Black Obsidian is among the favorites stones for Protection. Powerful stone for eliminating all negative energies in oneself and one’s environment. Known for its ability to work as a “Psychic/Etheric Vacuum Cleaner”.
Also a very good grounding stone and helpful for uncovering unconscious thoughts and patterns that inhibit one’s spiritual and personal growth. Good stone to have near computers, cell phones and electronics in general to deflect EMF's (Electric -Magnetic fields).
Medium- 1 inch x 1.5 inch
Large - about 2 x 2 inches plus
XXL - about 3 x 3 inches plus