Imperial Athens Ruby

From the Latin imperialis, of the empire — applied to color since the medieval period for the hues reserved for sovereigns and empires: imperial purple of Tyrian dye, imperial yellow of Ming-dynasty porcelain. As a modifier, imperial implies saturation combined with the institutional weight of a color owned by a court. Sits in the bold-and-deep corner, alongside royal.

Greek Ἀθῆναι, Athens. As a color modifier, athens implies an Acropolis-and-philosophical-city-state quality, the visual register of Athenian-Classical-City-State hand-built Acropolis-and-Parthenon-and-marble-temple-and-pottery Doric-and-Ionic-and-Corinthian surfaces under Athenian-Acropolis-and-Parthenon classical Aegean-marble-temple light. Sits at the modifier-and-cultural end of the grid, parallel to sparta and greek in usage.

From the Latin ruber — simply, red. The gemstone is a chromium-tinged corundum, harder than anything in nature except diamond, and so saturated that a fine Burmese pigeon's blood ruby at auction outpaces a comparable diamond by weight. The color borrows the gem's confidence: a clear, glassy red without the brown of garnet or the blue of crimson.