Black Tourmaline tumble stones are small, polished stones made from the mineral Black Tourmaline. These stones are often used in crystal healing practices and are believed to possess a variety of healing properties. 

Here are some of the properties that Black Tourmaline tumble stones are said to give: 

Grounding and Protection: Black Tourmaline is believed to have a grounding and protective energy that can help to keep you centered and protected in challenging situations. It can also help to deflect negative energy. 

EMF Protection: Black Tourmaline is said to be a powerful stone for electromagnetic field (EMF) protection. It is believed to help absorb and transmute the harmful energy from electronic devices such as cell phones and computers. 

Physical Healing: Black Tourmaline is said to have a healing effect on the physical body, particularly the immune system. It is believed to help with conditions such as arthritis and chronic fatigue syndrome.