Cabochon (noun)

A gemstone that is cut into a convex or dome-shaped surface with a flat back, without facets.

Origin:

Derived from the french word 'caboche' meaning 'knob or head'.

Examples:

1. The necklace was adorned with several cabochons of different sizes and colors.
2. She chose a large green cabochon for her ring and had it set in a simple gold band.
3. The cabochon cut allows the natural beauty of the stone to be displayed without the need for facets.
4. The process of cutting cabochons is much simpler than that of cutting facets, as it only requires a single grinding wheel.
5. Many antique pieces of jewelry feature cabochons, as the cutting style was very popular in the past.