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.
You will discover the difference between white gold and platinum and whether white gold or platinum is best for your needs. For more information about white gold or platinum have a look at the jewelry metal advice page.
White gold is an alloy of gold and some white metals such as silver and palladium. White gold can be 18ct, 14ct, 9ct or any karat. For example, 18ct yellow gold is made by mixing 75% gold (750 parts per thousand) with 25% (250 parts per thousand) other metals such as copper and zinc. 18ct white gold is made by mixing 75% gold with 25% other metals such as silver and palladium. So the amount of gold is the same but the alloy is different.
Traditionally nickel was used in white gold, however, nickel is no longer used in most white gold made today as nickel can cause reactions with some people. We do not use nickel in our white gold
When white gold rings are new they are coated with another white metal called Rhodium. Rhodium is a metal very similar to platinum and Rhodium shares many of the properties of platinum including its white color.
The rhodium plating is used to make the white gold look more white. The natural color of white gold is actually a light grey color. The Rhodium is very white and very hard, but it does wear away eventually. To keep a white gold ring looking its best it should be re-rhodium plated approximately each 12 to 18 months. Most local jewelers are able to rhodium plate jewelry for a cost effective price.
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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 very dense (heavy), so a platinum ring will feel heavier than an 18ct gold ring.
Platinum is, however, very expensive. A platinum ring will be approximately twice the price of an 18ct white gold ring (excluding gemstone costs).
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The answer to this question depends on whether the white gold jewelry item is in its natural color or whether it has been rhodium plated.
If a white gold item has been rhodium plated (note: most white gold rings are rhodium plated) then the color difference will not really be noticeable at all. For example, the image on the left shows a rhodium plated 18ct white gold diamond engagement ring together with a platinum wedding ring. As you can see, there is essentially no difference in the metal color.
Then compare that with this picture on the left that shows the contrast in color between the natural colors of white gold and platinum. This men's white gold and platinum ring incoporates a combination of both platinum and white gold. The light sections are platinum, the darker sections are the natural color of white gold.