Is the white gold that's used in jewelry actually platinum?

No, white gold and platinum are different metals. White gold is gold mixed with either nickel or palladium, meaning that gold was alloyed. Almost all white gold is also plated with rhodium which heightens the sheen and silvery color of any jewelry piece. White gold may be similar in appearance to platinum but it isn't the same compound.

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Actually this time you're wrong. White gold is really composed partially of real yellow gold. It's a gold alloy, which means that the gold is mixed with palladium or nickel, or both, giving it its white tone. White gold might also contain traces of copper or zinc. Superior white gold can be composed of some 90% gold, with the remaining 10% palladium or nickel. Lower value white gold can contain as little as 50% real gold.

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White gold refers to gold combined with silver or palladium, usually with rhodium plating. Platinum is naturally white, but is also the most expensive metal, so there's no need in 'concealing' it's presence by calling it ""white gold"".

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