Black Tourmaline large Tumble sized stones

Quality black Tourmaline . Each piece is 1 in or larger (package of 4 pieces)
Interested in knowing of the spiritual properties of Black ...
Black Tourmaline (Schorl) is a popular crystal known for strong protection, grounding, and negative energy cleansing, connecting with the Root Chakra for stability, and physically being a black borosilicate mineral (hardness 7-7.5) with a trigonal structure, often showing striations. Metaphysically, it absorbs negativity,