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“The value of a gold medal depends on the current market prices of silver and gold,” Stone explained. “Presently, 1 gram of gold is valued at $74.94, while 1 gram of silver is priced at $0.73.
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Some brasswind instrument manufacturers use 92.5% sterling silver as the material for making their instruments, including the flute and saxophone. For example, some leading saxophone manufacturers such as Selmer and Yanagisawa have crafted some of their saxophones from sterling silver. Use as jewelry rings, bracelets, earrings and necklaces.
Shape: Usually circular, featuring an attachment for a chain or ribbon; Diameter: A minimum of 60 mm; Thickness: A minimum of 3 mm; Material: First place (the gold medal): It is composed at least 92.5% of silver, plated with 6 grams of gold; the metal value was about US$494 in 2010.
Some jewellery is plated to give it a shiny, reflective look or to achieve a desired colour. Sterling silver jewellery may be plated with a thin layer of 0.999 fine silver (a process known as flashing) or plated with rhodium or gold. Base metal costume jewellery may also be plated with silver, gold, or rhodium for a more attractive finish.
For example, knowing that standard 18-carat yellow gold consists of 75% gold, 12.5% silver and the remaining 12.5% of copper (all by mass), the volume of pure gold in this alloy will be 60% since gold is much denser than the other metals used: 19.32 g/cm 3 for gold, 10.49 g/cm 3 for silver and 8.96 g/cm 3 for copper.
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