Home > Metals & Materials / Metales & Materiales > Metals in Jewelry / Metales en Joyería

Metals in Jewelry / Metales en Joyería

Different metals are used in jewelry as gold, silver, platinum, titanium, rhodium, tungsten carbide, stainless steel, among others.

The metals used in jewelry, by far, are the silver and gold. However, these are not being worked soft in its pure state but in alloys with other metals which modify its physical properties.

In the case of silver alloy title expressed in thousandths 1000 silver being the metal in its purest form. Plate 999 can be used as a very fine yarn for weaving frames in bracelets or necklaces due to its flexibility, being too soft to be worked differently. For this reason it is used in alloy with other metals such as copper and tin, nickel and / or zinc for example.

Sterling silver is 925 silver, meaning it has a 92.5% silver and 7.5% copper, in fact is the most used. Also used silver 950 and 900 can be found in jewelry and metalwork made up in silver 800.

In case the percentage of gold in the gold alloy is expressed in carat, where 100% represents 24k gold jewelry exist in many kilatajes for gold as 10k, 14k, 16k, 18k, etc.. For example in a jewel 18k gold contains 75% gold with an alloy of 25% of another metal, which also determines the color that will take oror among other properties. Thus, for example as obtained 18K gold of different colors:

Green gold: 75% gold and 25% silver

Yellow gold: 75% gold, 16% silver and 9% copper

Yellow gold: 75% gold, 12.5% ​​silver and 12.5% ​​copper

Rose gold: 75% gold, 8.3% silver and 16.7% copper

Red gold: 75% gold and 25% copper

White Gold: 75% gold, 3.6% copper, 15.7% nickel and 5.7% zinc

White Gold: 75% gold and 25% palladium

There are some things to consider: the green gold color is not intense, but a greenish yellow, white gold is usually obtained with gold and Italian league, a league prepared for this purpose, the obtained white gold with palladium is a bit grayer than the last, and more valuable as the palladium metal more expensive than the Italian league.

Note that these are not the only colors available but testing with different metals could probably get different colored alloys, but not necessarily easily used in jewelry.

(español)  Se usan diferentes metales en joyería como el oro, la plata,el platino, el titanio, el rodio, carburo de tungsteno, acero inoxidable,entre otros.

Los metales más usados en joyería, por lejos, son la plata y el oro. Sin embargo, al ser blandos éstos no son trabajados en su estado puro sino en aleaciones con otros metales que modifican sus propiedades físicas.

En el caso de la plata el título de la aleación se expresa en milésimas siendo la plata 1000 el metal en su estado puro. La Plata 999 puede ser utilizada como hilo muy fino para el tejido de entramados en pulseras o collares debido a su flexibilidad,siendo muy blanda para ser trabajada de otra manera. Por esta razón se la usa en aleación con cobre y otros metales como estaño,niquel y/o zinc por ejemplo.

La plata esterlina es plata 925, es decir que posee un 92,5% de plata y un 7,5% de cobre, de hecho es la más utilizada. También se usa plata 950 y 900 en joyería y podemos encontrar piezas de orfebrería hechas hasta en plata 800.

En el caso del oro el porcentaje de oro en la aleación se expresa en Kilates, en donde 24k representa un 100% de oro, existen en joyería muchos kilatajes para el oro como 10k, 14k, 16k, 18k, etc. Por ejemplo en una joya de oro en 18k contiene un 75% de oro con una aleación de 25% de otro metal, el cual además determina el color que va a tomar el oror entre otras propiedades. Asi es,por ejemplo como se obtiene el oro 18k de distintos colores:

Oro verde: 75% oro y 25% de plata

Oro amarillo claro: 75% oro, 16% de plata y 9% de cobre

Oro amarillo: 75% oro, 12,5% de plata y 12,5% de cobre

Oro rosa: 75% oro, 8,3% de plata y 16,7% de cobre

Oro rojo: 75% oro y 25% de cobre

Oro blanco: 75% oro, 3,6% de cobre, 15,7% de níquel y 5,7% de zinc

Oro blanco: 75% oro y 25% de paladio

Hay algunas cosas a tener en cuenta: el oro verde no es de color intenso, sino un amarillo verdoso; el oro blanco se suele obtener con oro y liga italiana, una liga preparada con este fin; el oro blanco obtenido con paladio es un poco más gris que el anterior, y de mayor valor por ser el paladio un metal más caro que la liga italiana.

Es importante notar que estos no son los únicos colores existentes sino que haciendo pruebas con distintos metales seguramente se podrían obtener aleaciones de distintos colores, pero no necesariamente fácilmente utilizables en joyería.

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