ウァレンティヌス
Saint Valentine supposedly wore a purple amethyst ring, customarily worn on the hands of Christian bishops with an image of Cupid engraved in it, a recognizable symbol associated with love that was legal under the Roman Empire; Roman soldiers would recognize the ring and ask him to perform marriage for them. Probably due to the association with Saint Valentine, amethyst has become the birthstone of February, which is thought to attract love.