{"id":31520,"date":"2025-08-14T09:00:00","date_gmt":"2025-08-14T07:00:00","guid":{"rendered":"https:\/\/www.11onze.cat\/?p=31520"},"modified":"2025-08-06T15:59:45","modified_gmt":"2025-08-06T13:59:45","slug":"como-mide-pureza-oro","status":"publish","type":"post","link":"https:\/\/www.11onze.cat\/es\/magazine\/como-mide-pureza-oro\/","title":{"rendered":"\u00bfC\u00f3mo se mide la pureza del oro?"},"content":{"rendered":"<div class=\"component text\">\n  <div class=\"container\">\n\n\n    <div class=\"row\">\n      <div class=\"col  col-lg-8  offset-lg-2\">\n        <h3><b>Cuando hablamos de oro, hablamos de valor. Pero no todo el oro es igual: lo que realmente determina su precio y su uso es el grado de pureza. Y aqu\u00ed es donde entran en juego dos formas de medirlo: los quilates (K) y las mil\u00e9simas (\u2030).<\/b><\/h3>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Aunque en las tiendas de joyer\u00eda o\u00edmos hablar de oro de 18 o 24 quilates, en el mundo de la inversi\u00f3n y la compraventa internacional, <\/span><b>el sistema m\u00e1s habitual es el de las mil\u00e9simas<\/b><span style=\"font-weight: 400;\">, una medida mucho m\u00e1s precisa.<\/span><\/p>\n<h3><b>\u00bfQu\u00e9 significa la pureza del oro?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">La pureza del oro indica la proporci\u00f3n de oro puro presente en una prenda respecto al total de su peso. El oro puro \u2014 decir, sin mezcla con otros metales\u2014 es qu\u00edmicamente conocido como <\/span><b>Au<\/b><span style=\"font-weight: 400;\"> y pertenece a la familia de los <\/span><b>metales nobles<\/b><span style=\"font-weight: 400;\">. Esto significa que <\/span><b>no se oxida ni degrada con el tiempo<\/b><span style=\"font-weight: 400;\">, no reacciona f\u00e1cilmente con otros elementos y tiene una resistencia excepcional a los \u00e1cidos.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Estas propiedades hacen del oro un metal especialmente <\/span><b>valioso, escaso y duradero<\/b><span style=\"font-weight: 400;\">, pero tambi\u00e9n <\/span><b>demasiado blando para algunos usos pr\u00e1cticos, como la fabricaci\u00f3n de joyas o monedas de circulaci\u00f3n<\/b><span style=\"font-weight: 400;\">. Por eso a menudo se combina con otros metales como el cobre, la plata o el paladio, para aumentar su resistencia o alterar su color.<\/span><\/p>\n<h3><b>Quilates: la medida tradicional en joyer\u00eda<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">El sistema de los <\/span><b>quilates<\/b><span style=\"font-weight: 400;\"> divide la pureza en 24 partes. As\u00ed:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>24 quilates (24 k):<\/b><span style=\"font-weight: 400;\"> oro puro (100%)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>22 quilates (22 k):<\/b><span style=\"font-weight: 400;\"> 91,6% de oro + 8,4% de otros metales<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>18 quilates (18 k):<\/b><span style=\"font-weight: 400;\"> 75% de oro + 25% de otros metales<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>14 quilates (14 k): <\/b><span style=\"font-weight: 400;\">58,5% de oro<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>9 quilates (9 k):<\/b><span style=\"font-weight: 400;\"> 37,5% de oro<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">El oro de <\/span><b>18 quilates es el m\u00e1s habitual en joyer\u00eda en Europa<\/b><span style=\"font-weight: 400;\">, puesto que ofrece un buen equilibrio entre calidad, durabilidad y coste. En cambio, en pa\u00edses como India o Emiratos \u00c1rabes Unidos, el oro de <\/span><b>22 quilates es m\u00e1s com\u00fan<\/b><span style=\"font-weight: 400;\">, especialmente por piezas tradicionales.<\/span><\/p>\n<h3><b>Mil\u00e9simas: la medida est\u00e1ndar en la inversi\u00f3n en oro<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">En el \u00e1mbito de la inversi\u00f3n y la industria, <\/span><b>se utiliza un sistema decimal mucho m\u00e1s certero<\/b><span style=\"font-weight: 400;\">: las mil\u00e9simas, que expresan la cantidad de oro puro por cada 1.000 partes.<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>999,9\u2030 <\/b><span style=\"font-weight: 400;\">(o \u201ccuatro nuevas\u201d): oro de alt\u00edsima pureza, usado en lingotes y monedas de inversi\u00f3n. Es el m\u00e1s cercano al oro puro real.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>995\u2030:<\/b><span style=\"font-weight: 400;\"> est\u00e1ndar m\u00ednimo para considerar un lingote como \u201cde inversi\u00f3n\u201d seg\u00fan las directrices internacionales.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>916\u2030:<\/b><span style=\"font-weight: 400;\"> equivale aproximadamente al oro de 22 quilates.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>750\u2030:<\/b><span style=\"font-weight: 400;\"> equivale a 18 quilates.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>585\u2030:<\/b><span style=\"font-weight: 400;\"> equivale a 14 quilates.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">En <\/span><b>999,9\u2030 ya se considera oro puro en los mercados internacionales<\/b><span style=\"font-weight: 400;\">. Es lo que encontramos en lingotes, monedas bullion y otros productos de inversi\u00f3n reconocidos.<\/span><\/p>\n<h3><b>\u00bfC\u00f3mo se presenta el oro de inversi\u00f3n?<\/b><\/h3>\n<p><b>El oro de inversi\u00f3n se comercializa principalmente en lingotes y monedas<\/b><span style=\"font-weight: 400;\">. Los lingotes pueden pesar desde 1 gramo hasta 1 kg o m\u00e1s, aunque los formatos m\u00e1s habituales en el \u00e1mbito minorista son de 2,5 g, 5 g, 10 g, 20 g, 50 g y 100 g.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Las <\/span><b>monedas bullion son emitidas por bancos centrales o casas de la moneda oficiales<\/b><span style=\"font-weight: 400;\">, y combinan valor de mercado con cierta coleccionabilidad. Ejemplos conocidos:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Krugerrand<\/b><span style=\"font-weight: 400;\"> (Sud\u00e1frica): 1 onza (31,1 g) de oro de 22 k<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Maple Leaf <\/b><span style=\"font-weight: 400;\">(Canad\u00e1): oro puro 999,9\u2030<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Philharmoniker <\/b><span style=\"font-weight: 400;\">(Austria): 999,9\u2030<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>American Eagle <\/b><span style=\"font-weight: 400;\">(EE.UU.): 22 k con peso total de una onza<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Britannia<\/b><span style=\"font-weight: 400;\"> (Reino Unido): 999,9\u2030 desde 2013<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Todas estas monedas deben llevar grabadas <\/span><b>el peso y la pureza exactas<\/b><span style=\"font-weight: 400;\">, lo que garantiza su aceptaci\u00f3n en el mercado global.<\/span><\/p>\n<h3><b>\u00bfY c\u00f3mo se consigue el oro puro?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">El oro no se encuentra en la naturaleza en estado puro, sino en forma de granitos, vetas o mezclas con otros materiales. Para convertirlo en oro de inversi\u00f3n o de alta calidad, es necesario pasarlo <\/span><b>por procesos de refinamiento que pueden incluir fundici\u00f3n a altas temperaturas, procesos qu\u00edmicos<\/b><span style=\"font-weight: 400;\"> con \u00e1cidos y posterior purificaci\u00f3n.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Este oro puro es el que <\/span><b>se utiliza para fabricar lingotes y monedas de alto valor<\/b><span style=\"font-weight: 400;\">. Pero en joyer\u00eda, como ya hemos dicho, la pureza a menudo se reduce expresamente por motivos t\u00e9cnicos o est\u00e9ticos.<\/span><\/p>\n<h3><b>\u00bfPor qu\u00e9 es importante conocer la pureza del oro?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Saber si estamos ante un oro de 18 k, 22 k o 999,9\u2030 no es solo una cuesti\u00f3n t\u00e9cnica, sino <\/span><b>una garant\u00eda de valor, transparencia y seguridad<\/b><span style=\"font-weight: 400;\">. Tanto si lo compramos como inversi\u00f3n, como si se trata de una joya o herencia familiar, identificar correctamente la pureza nos ayuda a tomar decisiones informadas.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Adem\u00e1s, en un mundo en el que el oro vuelve a ganar protagonismo como refugio ante la incertidumbre econ\u00f3mica, <\/span><b>conocer su valor real es m\u00e1s relevante que nunca<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><b>Si quieres descubrir la mejor opci\u00f3n para proteger tus ahorros, entra en <\/b><a href=\"https:\/\/serveis.11onze.cat\/es\/preciosos-11onze\"><b>Preciosos 11Onze<\/b><\/a><b>. 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