cabochon

This term is primarily used in jewelry design and gemology to describe a specific style of cutting. It is distinguished from faceted cuts, which use flat planes to reflect light. A cabochon is designed to showcase the internal color, patterns, or chatoyancy of a stone, such as the "cat's eye" effect or the play of color in opals.

In a professional context, the term refers to both the finished gemstone and the process of shaping it. While it is a technical term, it is commonly used by collectors and artisans to specify a smooth, domed aesthetic rather than a sparkling, prismatic one.