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/
My take on Nanachi, Riko, and Reg in the Goblet of Giants from the show "Made in Abyss." Several reference photos were used. Copic markers on 150lb illustration paper.