18k yellow gold band.
18k white gold bezels with 2ea., 0.02 ct. VS/F–H full cut diamonds.
ca. 2 ct. Chatham* (lab grown) ruby in 18k yellow gold bezel on a steel "bowl".
See also Ring Sizing.
Chatham* "grows" gems in the San Francisco Bay area. The process is virtually identical to how the stone is produced in nature. They are among the finest synthetic gems in the world, and are not cheap imitations or simulates. In private collection.