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What is white gold? Composition and properties
White gold was originally developed as an alternative to platinum (a natural white metal). White gold is not a metal per se. It is actually a gold alloy. This means that pure gold is alloyed with other metals such as silver, nickel, palladium.
In the industry, “white gold ” is often used to describe karat gold alloys with a whitish hue. The word “white ” refers to a wide range of colors that overlap with pale yellow, pale pink and tinted brown.
The properties of white gold vary depending on alloyed metals and their proportions. Therefore, white gold alloys can be used in various ways.
White gold can have a variety of alloys
Nowadays, there are many different formulas to make white gold whiter and shinier. While 75% pure gold can be alloyed with 17.3% nickel, 5.5% zinc and 2.2% copper with a silvery appearance, another combination is 75% pure gold alloyed with 15% silver and 10% titanium.
What is white gold made of?
White gold consists mainly of gold together with a mixture of dense metals such as copper, zinc, nickel, rhodium or palladium. The white color is achieved through careful selection of alloying metals that bleach the reddish yellow of pure gold. The amount of gold content is measured by a unit called carat (K). With 24 karat gold, all 24 parts of the gold are pure gold with extremely low impurities.
Similarly, 18-karat gold contains 75% (or 18/24) gold and 22-karat gold contains 91.6%. The amount of alloy added affects the overall durability and final color of the gold. For example, 22-karat gold is more durable and looks more yellowish than 18-karat gold.
Typically, white gold is stamped with 18 carat. It contains 75% gold and about 25% nickel and zinc. Some white gold contains 90% gold and 9.5% nickel. A very small amount of copper is also added to increase moldability. White gold can have various finenesses. These include: 333 gold (8K), 585 (14K), 750 gold (18K).
Rhodium to protect white gold
White gold is often plated with rhodium for a higher luster. Rhodium comes from the same metal family as platinum. This coating makes the jewelry last longer and retain its luster better than silver. However, rhodium can wear off over time, which can cause the white gold to look dull. Consequently, white gold should be repolished at regular intervals.
The white gold used in the jewelry industry are the alloys of gold-nickel-copper-zinc or gold-palladium-silver. Nickel and palladium act as primary bleaching agents to reduce the color of gold, and zinc acts as a secondary bleaching agent for copper.
White gold vs platinum
More and more, white gold is emerging as an alternative to platinum because it is cheaper than platinum. Platinum itself is considered hypoallergenic. White gold, on the other hand, may have nickel in the alloy, causing an allergenic effect. The same applies to copper in rose gold. Platinum is a denser and heavier metal than white gold. The amount of alloy added to the white gold determines the carat content of the white gold and thus its final color. In addition, the added alloy has a great impact on the quality.
Both metals have a similar cost per ounce, but more platinum is needed to make jewelry because it is denser. Due to the higher melting temperatures, platinum is more difficult to machine. These are some reasons why platinum rings cost more than white gold rings. The other main difference is that 22-karat, 18-karat or 14-karat gold is harder to scratch than platinum. On top of that, gold jewelry requires less cleaning and polishing. This is not the case with platinum jewelry, its maintenance costs are quite high as it needs to be cleaned and polished at certain intervals to maintain its smoothness and shiny appearance. However, both white gold and platinum have the same white color. It is quite difficult to tell the difference with the naked eye.
What is the difference between white gold and silver?
In terms of color, white gold and silver hardly differ. However, white gold is a more expensive alloy than silver. Because white gold is coated with rhodium, it does not oxidize like silver and is therefore much more manageable in everyday life. The reason for the oxidation of silver is that the silver comes into contact with the hydrogen sulfide in the atmosphere.
Restriction to the use of nickel in white gold
For several years, nickel has been abandoned as an alloying material due to allergic reactions. The maximum nickel content that may be used in all jewelry in EU countries is specified in the Nickel Safety Regulation. This regulation is intended to protect the buyer from an allergic reaction.
How do I know how much pure gold is in my white gold jewelry?
The gold content of all gold jewelry, whether yellow, white, or rose gold, is measured by “fineness.” For example, 333 gold always contains 33.3% pure gold or 750 gold always has a purity of 75%. You want to sell your white gold? If you do not find the purity of your gold piece, you are welcome to send it to us free of charge and 100% insured. All you have to do is fill out our order form and order a shipping bag. As soon as we receive your gold piece, our experts will begin to fully analyze it. As a result, you will promptly receive all the information, including a fair selling price.
Advantages and disadvantages of white gold
Like any other alloy, white gold has its advantages and disadvantages.
Advantages:
- It does not rust, tarnish or corrode.
- Compared to rose gold, white gold can be mixed with stronger metals to make the jewelry more scratch resistant and durable.
- Costs up to 50% less than platinum jewelry.
- White gold can have more intricate designs than platinum.
Disadvantages:
- The rhodium plating wears off over time, so it needs to be replaced every few years.
- Must be cleaned and polished every few years to maintain its smoothness and shiny appearance. However, this is a fairly simple and inexpensive process.
- White gold alloyed with nickel can cause allergic reactions in some people.
Conclusion:
Although white gold is generally less expensive than gold, it is still a high-quality metal. White gold is a great choice for engagement rings because it is a timelessly beautiful choice. Its bright color will surely complement any outfit. In addition, it is available in two purity grades: 14k and 18k. The lower purity of 14k makes it a less expensive option.
Aktuelle Ankaufskurse
- Gold
- Silber
- Platin
- Palladium
- 999 Feingold€68.24/g
- 900er Gold€62.06/g
- 750er Gold€51.93/g
- 585er Gold€40.65/g
- 333er Gold€22.93/g
- Zahngold 750€51.64/g
- Zahngold 600€41.50/g
- 999er Feinsilber€0.84/g
- 925er Silber€0.61/g
- 900er Silber€0.69/g
- 835er Silber€0.64/g
- 800er Silber€0.60/g
- 700er Silber€0.55/g
- 625er Silber€0.46/g
- 999er Platin€28.19/g
- 950er Platin€23.08/g
- 750er Platin€18.99/g
- 999er Palladium€24.94/g
- 950er Palladium€23.51/g
- 500er Palladium€10.76/g
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