White gold

  White gold is a mixture of yellow gold and a
  white-colored metal like silver or palladium.
  White gold came into popularity during World
  War II, when platinum, which has numerous
  industrial uses because of its strength, was
  barred from non-military uses. Most white
  gold is rhodium plated for an extra layer of
  hardness and a shiny look, but will need to
  be re-plated every few years
  http://www.awomensclub.com/wp-content/uploads/2010/10/White-Gold-Wedding-Ring.jpg.
http://www.style-people.com/wp-content/uploads/2011/09/White-Gold-Ring-1.jpg
http://img.allw.mn/content/www/2009/08/RCC_040502_b_l-38_Carat_Tanzanite_and_16_Carat_Diamond_14K_White_Gold_Ring.jpg

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