Onyx Fortune Power Dragon Chain
Onyx is a stone that offers up powerful vibrations of protection, strength, focus, and willpower. This stone is here to continuously push you forward in your life. By activating your root, solar plexus, and third eye chakras, one is able to fully ground themselves to Earth.
The ancient Romans entered battle carrying amulets of sardonyx engraved with Mars, the god of war. This was believed to bestow courage in battle.
A traditional Persian belief is that it helped with epilepsy. Sardonyx was traditionally used by English midwives to ease childbirth by laying it between the breasts of the mother.
Sources: 
https://en.wikipedia.org/wiki/Onyx
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