Definitions:

1. A term used in gemology to describe a gemstone that has been shaped and polished, but not faceted. NOUN
   • The antique brooch featured a large cabochon opal, surrounded by intricate filigree work.
2. The default method of preparing gemstones before gemstone cutting developed. NOUN
   • She preferred cabochon-cut gemstones for her rings because of their elegant, understated appearance.
3. Type of gemstone cutting typically used for opaque or transluscent stones and is commonly used with semiprecious stones. NOUN
   • The jeweler showcased a stunning cabochon emerald, highlighting its deep green color and smooth surface.

Synonyms:

• non-faceted gem
• polished stone
• smooth-cut gem