Used in electronics for reliable, corrosion-resistant contacts in connectors, switches, and printed circuit boards due to excellent conductivity and stability. Widely applied in dentistry for crowns, bridges, and fillings because of biocompatibility, malleability, and resistance to tarnish. Essential in jewelry and decorative items for aesthetic appeal, luster, and resistance to oxidation. Employed in aerospace and satellite systems for coating components exposed to extreme environments, such as infrared reflectors and heat shields. Utilized in medicine, particularly in treatment of rheumatoid arthritis through gold salts like auranofin. Used in nanotechnology as gold nanoparticles for diagnostic imaging, drug delivery, and biosensors due to unique optical and surface properties. Applied in glassmaking to produce red-colored glass and coatings with specific light-transmitting characteristics. Serves as a store of value and financial standard in bullion and coins for central banks and investors.