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Gold - DID YOU KNOW

Gold - DID YOU KNOW

DID YOU KNOW

That 1 oz. of pure gold is approx. The size of a cube of sugar? That 1 oz. of gold can be flattened out to 300 sq. ft.? That a mixture of one part nitric acid and 3 parts hydrochloric acid (aqua regia) will dissolve gold? That is 1966. All the refined gold in the world would make a cube 50 feet on a side?
What is gold
  • Symbol: AU
  • Atomic Weight: 196.967
  • Atomic Number: 79
  • Melting Point: 1063° C (1945° F)
  • Boiling Point: 2966° C (5370.8° F)
  • Specific Gravity: 19.2
  • MOH's Scale of Hardness: 2.5 - 3

What is a carat?
Pure gold is expressed as 24 carats. When alloyed (mixed with other metals), the following table is used to determine the carat.

  • 24K = 100% Pure Gold
  • 18K = 75% Pure Gold
  • 14K = 58% Pure Gold
  • 10K = 42% Pure Gold

How is gold weighed?

  • 0.0648 grams = 1 grain
  • 24 grains = 1 pennyweight (dwt.)
  • 20 pennyweight (dwt.) = 1 troy oz.
  • 12 troy oz. = 1 troy pound
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