sentences:  Prong setting or prong mount refers to the use of metal projections or tines, called "prongs", to secure a gemstone to a piece of jewelry.A prong setting is one component of what is known to jewelers 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 gemstone to the jewelry item.A common setting for diamond engagement rings, the prong setting allows light to strike a gemstone from more angles, increasing its brilliance.