The revolver clasp opens and closes using a cylindrical barrel that rotates into a fixed tongue. The mechanism requires rotation, unlike almost every other clasp, which requires a push or a pull.
A Storied Heritage
Design movements rarely set out to change how pendants attach to chains. But when fine jewelry's broader aesthetic shifted toward cleaner, less ornamented surfaces in the latter half of the twentieth century, the bail loop became conspicuous in a way it hadn't been before. The concealed bail was, in part, the industry's answer to its own evolving standards.
Stone Story
Only four gemstones have ever been called precious: diamond, ruby, sapphire, and emerald. The fact that every major civilization across recorded history arrived at the same list independently says something about what those stones have that the others do not.