Karat ratings & color, explained
Because gold is too soft to be used by itself, it has to be mixed with another metal to give it the strength and hardness to be made into jewelry. The amount of gold in a piece of jewelry is measured in terms of karats (k). Pure gold is 24k; the lower the amount of pure gold in a piece of jewelry, the lower the karat number. The higher the percentage of gold, the more valuable it is. Higher karat gold, however, is softer and can become thinner with wear, making a lower karat gold the stronger option. Gold jewelry must be stamped with a number that shows the gold content and the manufacturer’s logo, trademark, or symbol. This stamping is found on the inside of rings and on the clasp of bracelets or necklaces. Gold can come in different colors, and the tone is determined by the type and amount of other metals (called alloys) that are blended into the gold mixture used to make the piece of gold jewelry.
  • - Gold color: components
  • - Pink/rose gold: copper is added to the gold mixture
  • - Yellow gold: copper and silver are added to the gold mixture
  • - White gold:* platinum, palladium, nickel, and/or zinc are added to the gold mixture
  • - Green gold: additional amounts of silver are added to the gold mixture

*A plating of rhodium is applied to white gold to improve its shine and luster. The plating will wear off and can be reapplied by a jeweler as needed. Rhodium is a member of the platinum family.
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