Tibetan Quartz is typically single or double-terminated quartz with carbon (black) inclusions.
It is used to connect to our own inner “OM”, accessing information we may need about enlightenment and consciousness. They offer a very sacred feeling. Tibetan Black Quartz are among the most powerful protection crystals, and are hand-mined by Tibetan monks. They are great for cleansing and can be used for meditation and third eye opening. They balance all chakra's.
Some are almost clear, others have a lot of black.
One will be intuitively chosen for you.