Facets are flat faces on geometric shapes. The organization of naturally occurring facets was key to early developments in crystallography, since they reflect the underlying symmetry of the crystal structure.

What does faceted mean in jewelry?

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.

What does it mean when something is faceted?

Things that are faceted have many different sides or faces. The sparkling ruby in your grandmother's necklace is faceted. The adjective faceted is most often used to describe a gem or semi-precious stone that's been cut and polished.