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.
Necklace Length: 41cm(16.14")-46cm(18.11"), Necklace Pendant Size: 4cm(1.57") by 1.2cm(0.47"), Earring Size: 3.5cm(1.37") by 1cm(0.39"),One Earring Weight: 2g.