A bezel - or collet - setting is where the setting metal surrounds the girdle of the gemstone. Learn more about the anatomy of a ring here https://www.acsilver.co.uk/acsnews/2019/05/06/anatomy-of-a-ring/
I made this in 2019 as a project in my art class. We had to incorporate some sort of color wheel. I decided to take different styles of eyes I know how to draw and use that to represent emotions.