Definitions for "Cabachon"
a gemstone with a flat back and domed top shaped to fit into jewelry. Most common on opaque stones. Cabachons are usually formed from slabbed material.
A stone cut into an oval, round , rectangular, freeform or polygonal shape with a flat bottom and a domed or half round shape.
a shape given to stones or other materials that have a domed surface and a flat bottom. Used in many types of jewelry-making such as stone-setting or seedbead work.