bez·el 
(bĕzəl)
(bĕzəl)n.
1. A slanting surface or bevel on the edge of a cutting tool, such as a chisel.
2. The upper, faceted portion of a cut gem, above the girdle and below the table.
3.
a. A groove or flange designed to hold a beveled edge, as of a gem.
b. A ring that secures the crystal of a watch or chronometer, often rotatable and marked so as to allow timekeeping functions.
4. The frame around a display screen.
[Probably French dialectal; akin to French biseau, from bis, two times, from Latin; see dwo- in the Appendix of Indo-European roots.]
bezelbezel-set gemstones