Onyx is a stone of connection with the energy of the earth, it gives a sense of security, strengthens control over one's life, transforms unfavorable energies into strength and the willingness to overcome difficulties. 
The whole thing is enhanced by the energy of a hand-made spiral, which accelerates the flow of energy and emanates the color and vibration of solar power. This spiral also protects the owner against the influx of unwanted energies from the outside.