Royal Ache Ruby

The blue of European royal court dress and regalia from the late seventeenth century forward — the color of British peers' robes, French royal sashes, the lining of the crown-jewel cases. The color refers to a saturated, slightly violet-shifted blue with the matte finish of velvet or melton wool dyed to maximum intensity: deeper than cornflower, warmer than ultramarine, with the heraldic weight of a color reserved for monarchs and the official Crown.

Old English acan, to-hurt-or-throb. As a color modifier, ache implies a dull-and-lingering-and-throbbing quality, the visual register of Romantic-poet-and-pining-lover-ache hand-dull-and-lingering-and-throbbing Romantic-poet-and-pining-lover-and-bedside-vigil ached-and-dull-and-lingering-and-throbbing surfaces under Romantic-poet-and-pining-lover-and-bedside-vigil long-night-and-melancholy-and-pining candle-and-rain-window-light. Sits at the modifier-and-mood end of the grid, parallel to pang and throb 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.