White gold installation
White gold is not a single element like yellow gold, but
it is an alloy produced by combining yellow gold with one or more white
elements. The most common elements used in white gold alloys are:
Manganese, palladium, nickel, platinum, and sometimes
copper, silver, and zinc are added. The purity of white gold is expressed in
karat, like yellow gold, and the percentage of its purity is usually stamped on
it.[1]
White gold is available in different calibers: 18 karat,
which contains 75% of yellow gold, 14 karat, which contains 58.3% of yellow
gold, and 10 karat, which contains 41.7% of yellow gold[2]. White gold is also
made Usually up to 21 karat.[3]
Examples of the proportions of metals in white gold karat
Jewelery is the most famous practical application of white
gold; It is usually used in making rings, earrings, necklaces, and belts,[3]
and examples of the proportions of metals in white gold alloys are as follows:[2]
18 karat: 75% yellow gold, 10% palladium,
10% nickel, and 5% zinc.
14 karat: consists of 59% yellow gold, 25.5%
copper, 12.3% nickel, and 3.2% zinc.
White gold and platinum
White gold is a common alternative to silver, yellow gold,
and platinum[1], which is a rare, white and expensive natural metal,[4] as its
price exceeds the price of gold,[1] and it is considered the second most
expensive metal after rhodium, and the hardest and heaviest white metals] 4],
so white gold rings are sometimes coated with it to improve their appearance
without significantly increasing their price, [1].
Rhodium plating metal
Rhodium is an expensive and hard metal, and does not
oxidize with the passage of time,[2] so if white gold is not painted with it,
it may acquire other colors such as pale brown, pale pink, or gray.[1]
It is common in white gold that the rhodium plating
disappears from the piece, highlighting its original color due to daily wear,
or because of perspiration, or exposure to various chemicals, or perfumes,
which may require re-plating it again at the jeweler, and it is worth
mentioning that the greater the thickness of the layer Painted, the more likely
the piece will maintain its bright white color, and in contrast, the thinner
the paint, the faster it will be removed.[2]
References
1. Anne Marie Helmenstine، Ph.D (11-4-2017)، "What
Is White Gold? (Chemical Composition)"، www.thoughtco.com، Retrieved
2-9-2017. Edited.
2. "What is Gold?"، www.jewelryinfoplace.com، Retrieved
2-9-2017. Edited.
3. By G.P. Thomas (30-1-2013)، "White Gold - Chemical
Composition، Mechanical Properties and Common
Applications"، www.azom.com، Retrieved 14-9-2017. Edited.
4. "What is Platinum?"، www.jewelryinfoplace.com
، Retrieved 14-9-2017. Edited.
Comments
Post a Comment