Choose your favorite! Multi-colored tourmaline alternating with hematite, solid black tourmaline, or aquamarine and hematite. Aquamarine has been used for centuries to treat pain. Hematite is believed to help with circulation and headaches, and tourmaline is said to help with healing and mitigating the effects of "dirty" radiation such as cell signals, wi-fi, solar storms, and cordless phone EMF. Increased solar winds often cause higher levels of pain and headaches/neck aches, plus sleep disturbances. If you believe you are being negatively impacted by the frequencies around you, this might help!