Silver mercury, also known as quicksilver, refers to the shiny, liquid, silver-white metallic element mercury (Hg), often found in older thermometers, fluorescent bulbs, and historically in dental fillings (amalgam) mixed with silver, tin, and copper, but it's highly toxic, releasing dangerous vapors at room temperature
. It's also used in various spiritual practices for cleansing or luck, but its toxic nature makes handling and disposal critical.