a metal tincture used in heraldry to give a silvery appearance
lustrous gray; covered with or tinged with the color of silver
Tah glanced up, judging the angle of Sahen and Anumati. In their half phases, both were uncertain of their passions, neither hunting nor fleeing, but enjoying a rare moment of celestial accord that also made the night glimmer with blood and silver light. They washed the trade district, giving it a strangely foreboding air—on this building, a crimson stain and on that one, an argent tracery, as if an alchemist had been spilling potions.
Aguirre, Ann (2009-12-28). Stone Maiden (Kindle Locations 5714-5719). Ann Aguirre. Kindle Edition.
I love Anne Aguirre’s writing. She is so evocative, and her descriptions are so captivating. If you haven’t read Ston Maiden, it is a beautiful, haunting masterpiece. I treasure my copy and turn to it for escape time and again.
Definition from http://www.onelook.com/?w=argent&ls=a