Gold is valued for its rarity and usefulness in industry. The first use of gold was in making weapons that were harder than normal ones. This made them stronger and more effective than regular weapons. In ancient times, people used gold to make jewelry that represented a person’s tribe or personality traits. Today, gold is still valued for its industrial uses as well as for use in medical devices such as radiation therapy machines, heart valves, catheters and prosthetic limbs. Certain medical devices use gold because it does not tarnish or decay over time like other metals do. Gold also forms compounds with other elements; this makes it useful in making certain compounds that are useful in industry such as composite materials used in airplanes and cars.Gold is used to make the most common medical devices used to save lives: pacemakers and defibrillators. Heart valves made of gold are the most common type of heart valve used because they are easy to maintain without requiring regular cleaning or replacement due to build-up of blood inside the valve’s cavity. A radio-opaque paint process creates the jewelry using 24 karat (kg) gold which gives it a white or gray sheen due to impurities like copper found in cheaper 22 karat (kg) gold products. This method produces inexpensive but high quality items for patients who can afford them but cannot afford more expensive alternatives like platinum or stainless steel jewelry options. Gold’s whiteness also makes it an ideal choice for wedding rings since tarnish colors would clash with the bride’s outfit at the wedding reception later that night!Gold is used to make other items of personal value such as hangers for clothing, money clips, crowns, crown jewels, footballs and paper currency notes due to its malleability and yellow color which blends well with paper colors when printing money notes on paper stock. The University of Iowa holds a yearly “Goldsman” competition where students create intricate designs using 18-karat yellow gold using soldering irons or wire cutters— then they sell their creations at local craft events to raise money for student clubs on campus.. Other competitions prize designs using even higher quality 18-karat yellow gold products— with winning designs being showcased at local craft shows.
