noun
bezel
BEZ-ul/ˈbezl/
A rim or frame surrounding an object.
The ring's continuous metal bezel holds the gemstone snugly in place.

Etymology
An early meaning was the groove holding a stone in its setting, closely connecting the word with today’s gem-holding rim. Its deeper origin is uncertain.
In context
by a bezel set with 32 baguette cut rainbow colored sapphires 2.24 carats all individually cut