Bezel setting is a way of mounting a single precious stone onto a ring, earring or pendant. A bezel setting holds the stone in place with a lip overlapping the edges of the stone. On jewelry pieces such as rings, the gemstone is mounted on the bezel for display.
Bezel setting, unlike prong setting, protects the gemstone from blows and accidental rubbing. Bezel setting is a more secure way of mounting a gemstone. It holds the stone firmly, preventing it from dislodging, and prevents the gemstone from scratching something that it comes in contact with.
Bezel setting is particularly important with precious stones that are not very hard and can be scratched easily, as it gives these soft stones greater protection.