Understanding the differences.
Is white gold the same as Platinum?
No. White gold and platinum have their own properties which make them unique. Platinum is a naturally white metal. White gold is actually yellow gold which has been mixed with other metals, named alloys.
White gold contains silver or palladium and very little or no copper. Standard yellow gold has about an even mix of silver, nickel and copper. White gold is plated with rhodium in order to keep its platinum-like luster. White gold is man made.
Pure gold, 24k, is too soft to use for jewelry. A pure gold ring would bend and become dented very quickly. When we speak of 18k and 14k gold, there are standards for the amount of pure gold used for each.18k gold is 75% percent fine; 14k gold is 58.3% percent fine. The alloys are used strengthen and provide the desired color gold for the jewelry. The amount of the gold is the same but he alloys differs.
When white gold rings are made they are coated with another white metal called Rhodium. Rhodium is a metal very similar to platinum and shares many of the properties of platinum including its white color.
The rhodium plating is used to make the white gold look whiter. The natural color of white gold is actually a light grey color. The Rhodium is very white and very hard.
Platinum is the most precious of white metals, but unlike gold it is used in jewelry in almost its pure form (approximately 95% pure). Platinum is over twenty times rarer than gold. I take 10 tons of ore to get one ounce of Platinum as compared to 3 tone for gold. 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, and weighs almost twice as much as 18K gold.
Platinum however, is very expensive. A platinum ring can cost approximately four to five times as much as a gold ring. It is extremely durable and will resist tarnishing.