{"id":343,"date":"2020-05-22T06:18:00","date_gmt":"2020-05-22T06:18:00","guid":{"rendered":"https:\/\/www.altman.cz\/magazin\/?p=343"},"modified":"2023-07-19T09:50:51","modified_gmt":"2023-07-19T09:50:51","slug":"jak-se-vyznat-v-ryzosti-oznaceni-cistoty-sperku","status":"publish","type":"post","link":"https:\/\/www.altman.cz\/magazin\/p\/jak-se-vyznat-v-ryzosti-oznaceni-cistoty-sperku","title":{"rendered":"Jak se vyznat v ryzosti? Ozna\u010den\u00ed \u010distoty \u0161perk\u016f"},"content":{"rendered":"\n<p><em>Chcete kone\u010dn\u011b porozum\u011bt pojm\u016fm, kter\u00e9 se v\u00e1\u017e\u00ed ke zlatu a zlat\u00fdm \u0161perk\u016fm? Jist\u011b jste se s t\u00edm ji\u017e setkali. Jak\u00fd je rozd\u00edl mezi 24 kar\u00e1tov\u00fdm zlatem, a \u0161perky s ozna\u010den\u00edm 18 nebo 14 kar\u00e1t\u016f?<\/em><\/p>\n\n\n\n<p>Nab\u00edz\u00edme v\u00e1m <strong>snadn\u00fd p\u0159ehled<\/strong>, jak zd\u00e1nliv\u011b slo\u017eit\u00fdm v\u00fdpo\u010dt\u016fm p\u0159ij\u00edt na kloub a nau\u010dit se s lehkost\u00ed \u010d\u00edst \u00fadaje uveden\u00e9 u \u0161perk\u016f.<\/p>\n\n\n\n<p>Zlato se pro dal\u0161\u00ed zpracov\u00e1n\u00ed, nap\u0159\u00edklad v podob\u011b \u0161perk\u016f, vyu\u017e\u00edv\u00e1 ve slitin\u00e1ch, co\u017e znamen\u00e1, \u017ee \u010dist\u00fd kov je sm\u00edch\u00e1n s jin\u00fdmi prvky, aby z\u00edskal \u017e\u00e1douc\u00ed vlastnosti (p\u0159e\u010dt\u011bte si tak\u00e9 o <a href=\"https:\/\/www.altman.cz\/magazin\/p\/zlute-bile-ruzove-slitiny-zlata\">slitin\u00e1ch zlata<\/a>). Nen\u00ed to tedy jen o v\u00fdsledn\u00e9 barv\u011b \u010di cen\u011b, ale i mechanick\u00fdch atributech, na kter\u00fdch z\u00e1le\u017e\u00ed nejen p\u0159i designu va\u0161eho klenotu, ale m\u00e1 vliv i na p\u0159\u00edpadn\u00e9 alergick\u00e9 reakce.<\/p>\n\n\n\n\n\n<h2 class=\"wp-block-heading\">Kde naj\u00edt \u00fadaj o \u010distot\u011b Va\u0161ich \u0161perk\u016f?<\/h2>\n\n\n\n<p><strong>Ryzost<\/strong> ud\u00e1v\u00e1 \u010d\u00edseln\u00fd pom\u011br hmotnostn\u00edho obsahu \u010dist\u00e9ho drah\u00e9ho kovu (v na\u0161em p\u0159\u00edpad\u011b zlata, ale i st\u0159\u00edbra \u010di platiny) ve slitin\u011b nebo v p\u0159edm\u011btu. A tento pom\u011br naleznete na p\u0159edm\u011btech ozna\u010den\u00fd ov\u011b\u0159enou zna\u010dkou, tzv. <a href=\"https:\/\/www.altman.cz\/magazin\/p\/puncovni-znacky-jak-na-ne\">puncem<\/a>. Puncovn\u00ed zna\u010dky (v\u00edce se o nich dozv\u00edte <a href=\"https:\/\/www.altman.cz\/magazin\/p\/puncovni-znacky-jak-na-ne\">v&nbsp;na\u0161em \u010dl\u00e1nku<\/a>) nebo \u010d\u00edseln\u00e1 ozna\u010den\u00ed ryzosti najdete na m\u00e9n\u011b patrn\u00fdch m\u00edstech \u0161perk\u016f, jako jsou vnit\u0159n\u00ed strany prsten\u016f, zadn\u00ed strany p\u0159\u00edv\u011bsk\u016f a na zap\u00edn\u00e1n\u00ed n\u00e1u\u0161nic. V&nbsp;p\u0159\u00edpad\u011b, \u017ee si nejste jisti, o jak\u00fd punc se jedn\u00e1, nev\u00e1hejte se obr\u00e1tit na n\u00e1\u0161 vy\u0161kolen\u00fd person\u00e1l v na\u0161ich pobo\u010dk\u00e1ch.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Historick\u00fd exkurz<\/h2>\n\n\n\n<p>Tento \u010d\u00edseln\u00fd \u00fadaj ozna\u010duj\u00edc\u00ed ryzost se naz\u00fdv\u00e1 <strong>kar\u00e1t<\/strong> (kt) a jednotkou je 1\/24 hmotnosti. 1 kar\u00e1t = 1\/24, co\u017e je v p\u0159evodu 41\/1000 obsahu zlata ve slitin\u011b vyj\u00e1d\u0159en\u00ed v tis\u00edcin\u00e1ch. V dob\u00e1ch, kdy toto ozna\u010den\u00ed vzniklo, se je\u0161t\u011b nepou\u017e\u00edvala procenta, ani des\u00edtkov\u00e1 soustava, ale soustava dvan\u00e1ctkov\u00e1. Kar\u00e1t je sem\u00ednko rohovn\u00edku obecn\u00e9ho, neboli Ceratonia siliqua, kter\u00e9 se vyzna\u010duje pom\u011brn\u011b st\u00e1lou hmotnost\u00ed a slou\u017eilo tak jako jednotka pro kupeck\u00e9 po\u010dty.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/www.altman.cz\/magazin\/wp-content\/uploads\/2020\/06\/IMG_4463-1024x1024.jpg\" alt=\"\" class=\"wp-image-695\" srcset=\"https:\/\/www.altman.cz\/magazin\/wp-content\/uploads\/2020\/06\/IMG_4463-1024x1024.jpg 1024w, https:\/\/www.altman.cz\/magazin\/wp-content\/uploads\/2020\/06\/IMG_4463-300x300.jpg 300w, https:\/\/www.altman.cz\/magazin\/wp-content\/uploads\/2020\/06\/IMG_4463-150x150.jpg 150w, https:\/\/www.altman.cz\/magazin\/wp-content\/uploads\/2020\/06\/IMG_4463-768x768.jpg 768w, https:\/\/www.altman.cz\/magazin\/wp-content\/uploads\/2020\/06\/IMG_4463-1536x1536.jpg 1536w, https:\/\/www.altman.cz\/magazin\/wp-content\/uploads\/2020\/06\/IMG_4463.jpg 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Hmotnost nebo pod\u00edl?<\/h2>\n\n\n\n<p>Proto je toto \u010d\u00edseln\u00e9 ozna\u010den\u00ed bez rozm\u011bru, ozna\u010duj\u00edc\u00ed pouze kvalitu zlat\u00e9ho v\u00fdrobku dle vyu\u017eit\u00e9ho mno\u017estv\u00ed zlata. Poj\u010fme se pod\u00edvat v praxi, jak se p\u0159evod t\u011bchto jednotek projev\u00ed do dne\u0161n\u00ed doby:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>18 kar\u00e1t = 18 d\u00edl\u016f zlata a 6 d\u00edl\u016f jin\u00fdch kov\u016f \u2013 18\/24 = 0.750 \u2013 750\/1000 \u2013 75% pod\u00edlu zlata<\/li>\n\n\n\n<li>14 kar\u00e1t = 14 d\u00edl\u016f zlata a 10 d\u00edl\u016f jin\u00fdch kov\u016f \u2013 14\/24 = 0.585 \u2013 585\/1000 \u2013 58 % pod\u00edlu zlata<\/li>\n<\/ul>\n\n\n\n<p>Pokud se zam\u011b\u0159\u00edte na v\u00fdpo\u010det u 14 kar\u00e1tov\u00e9ho zlata, zjist\u00edte, \u017ee spr\u00e1vn\u011b je 583, co\u017e je v\u00fdsledek p\u0159esn\u011bj\u0161\u00ed, a vyu\u017e\u00edv\u00e1 se nap\u0159\u00edklad v Rusku (13,99 kt). V \u010cesk\u00e9 republice se pou\u017e\u00edv\u00e1 zlato o ryzosti 14,04 kar\u00e1t\u016f, co\u017e je zna\u010dka a v\u00fdpo\u010det 585. Se stejnou logikou je 24 kar\u00e1t\u016f = 999\/1000, co\u017e je 99,99% ryz\u00ed zlato; u zlata ryzosti 22 kar\u00e1t\u016f je 91,6% pod\u00edlu zlata ve slitin\u011b, a u 9 kar\u00e1tov\u00fdch \u0161perk\u016f je pom\u011br 375\/1000, co\u017e je ryzost 37, 5 %.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Investice do zlata<\/h2>\n\n\n\n<p>Faktem je, \u017ee <strong>24 kar\u00e1tov\u00e9 zlato<\/strong> se pou\u017e\u00edv\u00e1 jako <strong><a href=\"https:\/\/financer.com\/cz\/jak-na-to\/investice-do-zlata\/\" target=\"_blank\" rel=\"noreferrer noopener\">investi\u010dn\u00ed komodita<\/a><\/strong>, a pokud se o n\u011bm chcete dozv\u011bd\u011bt, p\u0159e\u010dt\u011bte si n\u00e1\u0161 \u010dl\u00e1nek, kter\u00fd se speci\u00e1ln\u011b <a href=\"https:\/\/www.altman.cz\/magazin\/p\/investicni-zlato\">v\u011bnuje tomuto t\u00e9matu<\/a>.<\/p>\n\n\n\n<p>Pro v\u00fdrobu \u0161perk\u016f je v\u0161ak nejvy\u0161\u0161\u00ed povolen\u00e1 ryzost 18 kar\u00e1t\u016f. Nej\u010dast\u011bji se tak setk\u00e1te se <a href=\"https:\/\/www.altman.cz\/damske-sperky\">\u0161perky<\/a> 14 kar\u00e1tov\u00fdmi a z\u0159\u00eddka s 9 kar\u00e1tov\u00fdmi, kter\u00e9 jsou v zahrani\u010d\u00ed v\u00edce obl\u00edben\u00e9 ne\u017e v na\u0161ich kon\u010din\u00e1ch. I tyto \u0161perky mohou b\u00fdt Va\u0161\u00ed novou investic\u00ed, nap\u0159\u00edklad jako rodinn\u00fd \u0161perk p\u0159ed\u00e1van\u00fd po generace. Pod\u00edvejte se na <a href=\"https:\/\/www.altman.cz\/magazin\/p\/darek-pro-maminku-kupte-ji-sperk\">tipy na d\u00e1rek<\/a>, kter\u00e9 klenot ud\u011blaj\u00ed nezapomenuteln\u00fdm.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Nen\u00ed kar\u00e1t jako kar\u00e1t<\/h2>\n\n\n\n<p>Nesnadnou situaci k pochopen\u00ed \u010din\u00ed i fakt, \u017ee \u201ekar\u00e1t\u201c je nejen jednotkou ryzosti (ozna\u010den\u00ed kt), ale z\u00e1rove\u0148 i stejn\u011b zn\u011bj\u00edc\u00ed jednotkou v\u00e1hovou (ozna\u010den\u00ed ct), tzv. metrick\u00fd\/v\u00e1hov\u00fd kar\u00e1t, kter\u00e1 se vyu\u017e\u00edv\u00e1 u kamen\u016f. 1 ct = 0,2053 gramu. Tud\u00ed\u017e u \u0161perk\u016f se pravd\u011bpodobn\u011b setk\u00e1te s oboj\u00edm.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Vyzkou\u0161ejte si s n\u00e1mi<\/h2>\n\n\n\n<p>Jak na to? Uvedeme si <strong>praktick\u00fd p\u0159\u00edklad<\/strong>: Zlat\u00fd prsten s diamantem; ryzost zlata 585\/1000; hmotnost \u0161perku 1,80 g; diamant: 0,26 ct. 4mm, \u010distota SI, barva H. Jedn\u00e1 se o 14 kar\u00e1tov\u00e9 zlato (585\/1000), kdy hmotnost samotn\u00e9ho t\u00e9m\u011b\u0159 bezbarv\u00e9ho diamantu (barva H) s pr\u016fm\u011brem 4 milimetry a s vnit\u0159n\u00edmi nedokonalostmi zjistiteln\u00fdmi lupou (\u010distota SI) je 0,052 gramu a hmotnost zbytku zlat\u00e9 slitiny skoro 1,75 gramu.<\/p>\n\n\n\n<p>V p\u0159\u00edpad\u011b n\u00e1kupu se samoz\u0159ejm\u011b neost\u00fdchejte po\u017e\u00e1dat o vysv\u011btlen\u00ed n\u00e1\u0161 odborn\u011b vy\u0161kolen\u00fd person\u00e1l na pobo\u010dk\u00e1ch. R\u00e1di v\u00e1m porad\u00edme.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Chcete kone\u010dn\u011b porozum\u011bt pojm\u016fm, kter\u00e9 se v\u00e1\u017e\u00ed ke zlatu a zlat\u00fdm \u0161perk\u016fm? Jist\u011b jste se s t\u00edm ji\u017e setkali. Jak\u00fd je rozd\u00edl mezi 24 kar\u00e1tov\u00fdm zlatem, a \u0161perky s ozna\u010den\u00edm 18 nebo 14 kar\u00e1t\u016f? Nab\u00edz\u00edme v\u00e1m snadn\u00fd p\u0159ehled, jak zd\u00e1nliv\u011b slo\u017eit\u00fdm v\u00fdpo\u010dt\u016fm p\u0159ij\u00edt na kloub a nau\u010dit se s lehkost\u00ed \u010d\u00edst \u00fadaje uveden\u00e9 u \u0161perk\u016f. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":815,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[2],"tags":[],"class_list":["post-343","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sperky"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Jak se vyznat v ryzosti? Ozna\u010den\u00ed \u010distoty \u0161perk\u016f | Magaz\u00edn Altman.cz<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.altman.cz\/magazin\/p\/jak-se-vyznat-v-ryzosti-oznaceni-cistoty-sperku\" \/>\n<meta property=\"og:locale\" content=\"cs_CZ\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Jak se vyznat v ryzosti? Ozna\u010den\u00ed \u010distoty \u0161perk\u016f | Magaz\u00edn Altman.cz\" \/>\n<meta property=\"og:description\" content=\"Chcete kone\u010dn\u011b porozum\u011bt pojm\u016fm, kter\u00e9 se v\u00e1\u017e\u00ed ke zlatu a zlat\u00fdm \u0161perk\u016fm? Jist\u011b jste se s t\u00edm ji\u017e setkali. Jak\u00fd je rozd\u00edl mezi 24 kar\u00e1tov\u00fdm zlatem, a \u0161perky s ozna\u010den\u00edm 18 nebo 14 kar\u00e1t\u016f? Nab\u00edz\u00edme v\u00e1m snadn\u00fd p\u0159ehled, jak zd\u00e1nliv\u011b slo\u017eit\u00fdm v\u00fdpo\u010dt\u016fm p\u0159ij\u00edt na kloub a nau\u010dit se s lehkost\u00ed \u010d\u00edst \u00fadaje uveden\u00e9 u \u0161perk\u016f. 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