===Diamond=== A great and well written overview of a fascinating subject including in one place information I could not find collected together elsewhere. Particularly strong on physical properties including the popular gem cuts. History, some commercial issues, trivia such as famous cutters and stones. In my opinion this featured article candidat...
• (n.) The principles or authority of a hierarchy.
Hi'er·arch`ism noun The principles or authority of a hierarchy. « The more dominant hierarchism of the West.» Milman. 
hierarchism Hierarchical practice and principles; hierarchical system.
hierarchical principles, rule, or influence.