Cubic zirconias are pronged to the jewelry item to secure from loosing. A prong setting is one component of what is known in the jewelry business as a head, a claw-shaped type of binding (typically 3, 4, or 6 individual prongs per head) that is welded or soldered to a jewelry item in order to mount (or set) a stone to the jewelry item.
Brass Metal is much smoother and will protect your skin from rubbing. You will feel comfortable when wearing it. Also, jewelry made by brass metal has light weight.