"Pearl?—Ruby, rather!—or Coral!"
Red coral specimen
Creative Commons AttributionRed coral specimen - Credit: ninniane

While pearls traditionally represent purity, rubies and red coral are at the opposite end of the symbolic spectrum. Both are allied with Mars, the planet of passion, vitality, sexuality and war, and are said to run with an energizing life-force. Whilst pearls evoke the peace of water, rubies and red coral are equated with blood and fire.

Cut ruby
Creative Commons AttributionCut ruby - Credit: Humanfeather