A faceted stone is a type of gemstone cut where the stone has flat top, polished faces called facets across it and a pointed bottom. This cut refracts the light inside the gem and reflects light on the outside facets of the gemstone, maximising the stone's brilliance and fire, usually with three or four sides. The widest part of a faceted stone is the girdle; the girdle lies on a plane that separates the crown, the stone's upper portion, from the pavilion, the stone's base.
Facets can be broken down into: Crown Facets and Pavilion Facets. The Table and Culet are also considered facets. The girdle of a stone can be faceted. The purpose of facets is to enhance the brilliance and scintillation of a gemstone.