The big Cubic Zirconia is 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.
Length: 5.8cm(2.3"), Width: 1.6cm(0.6"), One Earring Weight: 9.5g.