Black Onyx Gemstone. Black Onyx is purported to help eliminate apathy, stress and negative thinking.. It is used to change habits, in addition to helping concentration levels and aiding absentmindedness.. The five faced rudraksha is said to represent the meditative powers of Shiva to focus the mind and remove the demons of desire, lust and attachment.. Rudraksha. Rudraksha can protect your body against the negative energies.. Rudraksha is known to enhance the power of mind and sharpen focus and concentration.. Features-. 108 beads.. 8mm Black Onyx round beads.. 8  - 18mm Rudraksha round beads.. Hand knotted with Black cotton thread.. Black silk thread tassel (4.33 inches/11cm). 41 inches (104cm) total length, excluding tassel.