The answer to this question is no.  White gold and platinum have their own properties which make them unique. The following white gold information and platinum information show you the difference between the two metals.

Platinum is a white metal, but unlike gold it is used in jewelry in almost its pure form (approximately 95% pure). Platinum is extremely long wearing and is very white, so it does not need to be Rhodium plated like white gold. Platinum is also very dense (heavy), so a platinum ring will feel heavier than an 18kt gold ring.
In addition to more weight, it is also very expensive. A platinum ring will be approximately twice the price of an 18kt white gold ring (excluding gemstone costs).

 

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