Known as the stone that gives the wearer strength and absorbs any negative energy, a black onyx donut is also a wonderful canvas for your creativity. This Pi would be wonderful on a length of leather or added to Poetry as a focal bead. Expect slight variations in color from black to deep brown but not in quality. Be sure to watch our Facebook Live Episodes Macramė & Semi-Precious Stones and Bead Embroidery to learn techniques for adding Pi discs to your designs. We love how well this Pi pairs with our black onyx beads.