Must be in pairs of matching material. Each piece must have at least two perpendicular flat surfaces. Each piece must have a polished surface visible when bookends are in a functional position. Portions of specimens may be left in the rough state if all other conditions are met. A cabochon shall be lapidary material of a size that could be worn for jewelry, cut free hand without having been tumbled.
Cabochons fall in three categories.
Modern cabochons may have either domed or flat tops and have any shape that exhibits both the skill and creativity of the lapidary. They are not restricted to having a plane of symmetry. The reverse side of any cabochon, either modern, traditional, or creative, may have a bevel or chamfer. A bevel or chathfer is not mandatory. See Rule 9.8 .