how much gold is in 24 karat gold
Fineness Various ways of expressing fineness have been used and two remain in common use: millesimal fineness expressed in units of parts per 1,000[1] and karats used only for gold. Karats measure the parts per 24, so that 18 karat = ​18⁄24 = 75% and 24 karat gold is considered 100% gold.[2]
Gold mining in the United States In 2016 the United States produced 209 tonnes of gold, worth about US$8.5 billion, and 6.7% of world production, making it the fourth-largest gold-producing nation, behind China, Australia and Russia. Most gold produced today in the US comes from large open-pit heap leach mines in the state of Nevada. The US is a net exporter of gold.[4][5]