Illusion Setting

An illusion setting uses a polished metal plate or bezel with grooved reflective edges around a small diamond to create the optical illusion that the diamond is larger than its actual size.

This clever setting technique was popular in the 1920s-1940s when larger diamonds were less accessible, and has experienced a revival in vintage-inspired jewelry. The metal surrounding the diamond is carved or faceted to reflect light like the diamond itself, making the stone appear to extend beyond its actual boundaries.

Illusion settings work best with round or princess cut diamonds and can make a small diamond (0.10-0.25 carats) appear nearly double its size. They're commonly used in vintage rings, men's rings, and as a cost-effective way to create diamond presence.