{"id":31520,"date":"2026-07-21T09:00:00","date_gmt":"2026-07-21T07:00:00","guid":{"rendered":"https:\/\/www.11onze.cat\/?p=31520"},"modified":"2026-07-17T15:16:18","modified_gmt":"2026-07-17T13:16:18","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>Quan parlem d\u2019or, parlem de valor. Per\u00f2 no tot l\u2019or \u00e9s igual: el que realment en determina el preu i l\u2019\u00fas \u00e9s el grau de puresa. I aqu\u00ed \u00e9s on entren en joc dues maneres de mesurar-lo: els quirats (k) i les mil\u00b7l\u00e8simes (\u2030).<\/b><\/h3>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Tot i que a les botigues de joieria sentim parlar d\u2019or de 18 o 24 quirats, en el m\u00f3n de la inversi\u00f3 i la compravenda internacional, <\/span><b>el sistema m\u00e9s habitual \u00e9s el de les mil\u00b7l\u00e8simes<\/b><span style=\"font-weight: 400;\">, una mesura molt m\u00e9s precisa.<\/span><\/p>\n<h3><b>Qu\u00e8 vol dir la puresa de l\u2019or?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">La puresa de l\u2019or indica la proporci\u00f3 d\u2019or pur present en una pe\u00e7a respecte al total del seu pes. L\u2019or pur \u2014\u00e9s a dir, sense barreja amb altres metalls\u2014 \u00e9s qu\u00edmicament conegut com a <\/span><b>Au <\/b><span style=\"font-weight: 400;\">i pertany a la fam\u00edlia dels <\/span><b>metalls nobles<\/b><span style=\"font-weight: 400;\">. Aix\u00f2 vol dir que<\/span><b> no s\u2019oxida ni es degrada amb el temps<\/b><span style=\"font-weight: 400;\">, no reacciona f\u00e0cilment amb altres elements i t\u00e9 una resist\u00e8ncia excepcional als \u00e0cids.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Aquestes propietats fan de l\u2019or un metall especialment <\/span><b>valu\u00f3s, esc\u00e0s i durador<\/b><span style=\"font-weight: 400;\">, per\u00f2 tamb\u00e9 <\/span><b>massa tou<\/b> <b>per a alguns usos pr\u00e0ctics, com ara la fabricaci\u00f3 de joies o monedes de circulaci\u00f3<\/b><span style=\"font-weight: 400;\">. Per aix\u00f2 sovint es combina amb altres metalls com el coure, la plata o el pal\u00b7ladi, per augmentar-ne la resist\u00e8ncia o alterar-ne el color.<\/span><\/p>\n<h3><b>Quirats: la mesura tradicional en joieria<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">El sistema dels <\/span><b>quirats<\/b><span style=\"font-weight: 400;\"> divideix la puresa en 24 parts. Aix\u00ed:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>24 quirats (24 k)<\/b><span style=\"font-weight: 400;\">: or pur (100%)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>22 quirats (22 k)<\/b><span style=\"font-weight: 400;\">: 91,6% d\u2019or + 8,4% d\u2019altres metalls<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>18 quirats (18 k)<\/b><span style=\"font-weight: 400;\">: 75% d\u2019or + 25% d\u2019altres metalls<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>14 quirats (14 k)<\/b><span style=\"font-weight: 400;\">: 58,5% d\u2019or<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>9 quirats (9 k)<\/b><span style=\"font-weight: 400;\">: 37,5% d\u2019or<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">L\u2019or de <\/span><b>18 quirats \u00e9s el m\u00e9s habitual en joieria a Europa<\/b><span style=\"font-weight: 400;\">, ja que ofereix un bon equilibri entre qualitat, durabilitat i cost. En canvi, en pa\u00efsos com l\u2019\u00cdndia o els Emirats \u00c0rabs Units, l\u2019or de <\/span><b>22 quirats<\/b><span style=\"font-weight: 400;\"> \u00e9s m\u00e9s com\u00fa, especialment per peces tradicionals.<\/span><\/p>\n<h3><b>Mil\u00b7l\u00e8simes: la mesura est\u00e0ndard en la inversi\u00f3 en or<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">En l\u2019\u00e0mbit de la inversi\u00f3 i la ind\u00fastria, s\u2019utilitza un sistema decimal molt m\u00e9s prec\u00eds: les <\/span><b>mil\u00b7l\u00e8simes<\/b><span style=\"font-weight: 400;\">, que expressen la quantitat d\u2019or pur per cada 1.000 parts.<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>999,9\u2030<\/b> (o \u201cquatre noves\u201d)<span style=\"font-weight: 400;\">: or d\u2019alt\u00edssima puresa, usat en lingots i monedes d\u2019inversi\u00f3. \u00c9s el m\u00e9s proper a l\u2019or pur real.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>995\u2030<\/b><span style=\"font-weight: 400;\">: est\u00e0ndard m\u00ednim per considerar un lingot com a \u201cd&#8217;inversi\u00f3\u201d segons les directrius internacionals.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>916\u2030<\/b><span style=\"font-weight: 400;\">: equival aproximadament a l\u2019or de 22 quirats.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>750\u2030<\/b><span style=\"font-weight: 400;\">: equival a 18 quirats.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>585\u2030<\/b><span style=\"font-weight: 400;\">: equival a 14 quirats.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">El <\/span><b>999,9\u2030 ja es considera or pur<\/b><span style=\"font-weight: 400;\"><strong> en els mercats internacionals<\/strong>. \u00c9s el que trobem en lingots, monedes bullion i altres productes d\u2019inversi\u00f3 reconeguts.<\/span><\/p>\n<h3><b>Com es presenta l\u2019or d\u2019inversi\u00f3?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">L\u2019or d\u2019inversi\u00f3 es comercialitza principalment en <\/span><b>lingots i monedes<\/b><span style=\"font-weight: 400;\">. Els lingots poden pesar des d\u20191 gram fins a 1 kg o m\u00e9s, tot i que els formats m\u00e9s habituals en l\u2019\u00e0mbit minorista s\u00f3n de 2,5 g, 5 g, 10\u202fg, 20 g, 50 g i 100 g.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Les <\/span><b>monedes bullion<\/b> <b>s\u00f3n emeses per bancs centrals o cases de la moneda oficials<\/b><span style=\"font-weight: 400;\">, i combinen valor de mercat amb una certa col\u00b7leccionabilitat. Exemples coneguts:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Krugerrand<\/b><span style=\"font-weight: 400;\"> (Sud-\u00e0frica): 1 un\u00e7a (31,1 g) d\u2019or de 22 qu\u00e8<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Maple Leaf<\/b><span style=\"font-weight: 400;\"> (Canad\u00e0): or pur 999,9\u2030<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Philharmoniker<\/b><span style=\"font-weight: 400;\"> (\u00c0ustria): 999,9\u2030<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>American Eagle<\/b><span style=\"font-weight: 400;\"> (EUA): 22 qu\u00e8 amb pes total d\u2019una un\u00e7a<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Britannia<\/b><span style=\"font-weight: 400;\"> (Regne Unit): 999,9\u2030 des de 2013<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Totes aquestes monedes han de dur gravades <\/span><b>el pes i la puresa exactes<\/b><span style=\"font-weight: 400;\">, fet que garanteix la seva acceptaci\u00f3 al mercat global.<\/span><\/p>\n<h3><b>I com s\u2019aconsegueix l\u2019or pur?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">L\u2019or no es troba a la natura en estat pur, sin\u00f3 en forma de granets, vetes o barreges amb altres materials. Per convertir-lo en or d\u2019inversi\u00f3 o d\u2019alta qualitat, cal passar-lo per <\/span><b>processos de refinament<\/b> <b>que poden incloure fosa a altes temperatures, processos qu\u00edmics<\/b><span style=\"font-weight: 400;\"> amb \u00e0cids i posterior purificaci\u00f3.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Aquest or pur \u00e9s <\/span><b>el que es fa servir per fabricar lingots i monedes d\u2019alt valor<\/b><span style=\"font-weight: 400;\">. Per\u00f2 en joieria, com ja hem dit, la puresa sovint es redueix expressament per motius t\u00e8cnics o est\u00e8tics.<\/span><\/p>\n<h3><b>Per qu\u00e8 \u00e9s important con\u00e8ixer la puresa de l\u2019or?<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Saber si estem davant d\u2019un or de 18 k, 22 k o 999,9\u2030 no \u00e9s nom\u00e9s una q\u00fcesti\u00f3 t\u00e8cnica, sin\u00f3 <\/span><b>una garantia de valor, transpar\u00e8ncia i seguretat<\/b><span style=\"font-weight: 400;\">. Tant si el comprem com a inversi\u00f3, com si es tracta d\u2019una joia o her\u00e8ncia familiar, identificar correctament la puresa ens ajuda a prendre decisions informades.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A m\u00e9s, en un m\u00f3n on l\u2019or torna a guanyar protagonisme com a refugi davant la incertesa econ\u00f2mica, <\/span><b>con\u00e8ixer el seu valor real \u00e9s m\u00e9s rellevant que mai<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><b>Si vols descobrir la millor opci\u00f3 per protegir els teus estalvis, entra a <\/b><a href=\"https:\/\/serveis.11onze.cat\/preciosos-11onze\"><b>Preciosos 11Onze<\/b><\/a><b>. 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Per\u00f2, quan es t\u00e9 en contra un \u2018lobby\u2019<\/p>\n            <\/div>\n          <\/div>\n\n\n          <div class=\"card\">\n            <a href=\"https:\/\/www.11onze.cat\/magazine\/com-fa-or-preciosos-11onze\/\" class=\"card-link\" target=\"_self\"><\/a>\n            <div class=\"card-img\">\n              <img decoding=\"async\" src=\"https:\/\/www.11onze.cat\/wp-content\/uploads\/2022\/04\/THUMBNAIL_OR_11ONZE.jpg\" class=\"card-img-top\" alt=\"\">\n                <span class=\"card-category\">11Onze<\/span>\n            <\/div>\n            <div class=\"card-body\">\n              <p class=\"card-title p2\"><strong>Com es fa l\u2019or de Preciosos 11Onze<\/strong><\/p>\n              <span class=\"card-time\">3min lectura<\/span>\n              <p class=\"card-text small\">A finals d\u2019abril de 2022 11Onze va comen\u00e7ar a enviar l\u2019or als<\/p>\n            <\/div>\n          <\/div>\n\n\n          <div class=\"card\">\n            <a href=\"https:\/\/www.11onze.cat\/es\/magazine\/como-mide-pureza-oro\/\" class=\"card-link\" target=\"_self\"><\/a>\n            <div class=\"card-img\">\n              <img decoding=\"async\" src=\"https:\/\/www.11onze.cat\/wp-content\/uploads\/2022\/05\/THUMBNAIL_OR_QUIRATS_BULLION.jpg\" class=\"card-img-top\" alt=\"\">\n                <span class=\"card-category\">Invertir<\/span>\n            <\/div>\n            <div class=\"card-body\">\n              <p class=\"card-title p2\"><strong>L\u2019impacte de Basilea III en l\u2019or paper<\/strong><\/p>\n              <span class=\"card-time\">5min lectura<\/span>\n              <p class=\"card-text small\">L\u2019entrada en vigor de la normativa Basilea III va introduir<\/p>\n            <\/div>\n          <\/div>\n\n              <\/div>\n              <br>\n              <br>\n              <div class=\"cards__wrapper\">\n\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"","protected":false},"author":71,"featured_media":31517,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","footnotes":""},"categories":[28],"tags":[168],"class_list":["post-31520","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sin-categorizar","tag-invertir"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u00bfC\u00f3mo se mide la pureza del oro? - 11Onze<\/title>\n<meta name=\"description\" content=\"Sab\u00edas que el oro puro es de 24 k o 999,9\u2030? 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