{"id":105,"count":18,"description":"Op\u00e1ly jsou zvl\u00e1\u0161tn\u00ed formou oxidu k\u0159emi\u010dit\u00e9ho, obsahuj\u00edc\u00ed prom\u011bnliv\u00e9 mno\u017estv\u00ed vody. Hydratovan\u00fd oxid k\u0159emi\u010dit\u00fd ve struktu\u0159e op\u00e1lu tvo\u0159\u00ed gel v podob\u011b mikroskopick\u00fdch kuli\u010dek. Na t\u011bchto kuli\u010dk\u00e1ch doch\u00e1z\u00ed k rozkladu sv\u011btla a t\u00edm vznik\u00e1 charakteristick\u00e1 opalescence.\r\n\r\nRozli\u0161ujeme n\u011bkolik druh\u016f op\u00e1l\u016f, p\u0159i\u010dem\u017e z\u00e1kladn\u00ed d\u011blen\u00ed je na drah\u00e9 op\u00e1ly, kter\u00e9 se vyzna\u010duj\u00ed tzv. hrou barev tzv obecn\u00e9.  I mezi \u201eb\u011b\u017en\u00fdmi\u201c obecn\u00fdmi op\u00e1ly se v\u0161ak najdou velmi atraktivn\u00ed exempl\u00e1\u0159e \u2013 nap\u0159\u00edklad modr\u00e9 a r\u016f\u017eov\u00e9 op\u00e1ly z Peru \u010di zelen\u00e9 a citronov\u011b \u017elut\u00e9 z Madagaskaru a Mali.\r\n\r\nS tvrdost\u00ed 5,5 a\u017e 6,5 na Mohsov\u011b stupnici pat\u0159\u00ed op\u00e1ly mezi m\u011bk\u010d\u00ed drah\u00e9 kameny. Vy\u017eaduj\u00ed proto opatrn\u00e9 zach\u00e1zen\u00ed, aby nedo\u0161lo k po\u0161kr\u00e1b\u00e1n\u00ed nebo prasknut\u00ed. I p\u0159es svou k\u0159ehkost jsou ve \u0161perka\u0159stv\u00ed velmi obl\u00edben\u00e9 \u2013 a to p\u0159edev\u0161\u00edm d\u00edky sv\u00e9 nev\u0161edn\u00ed barevnosti a schopnosti okam\u017eit\u011b upoutat pozornost. Pou\u017e\u00edvaj\u00ed se do prsten\u016f, n\u00e1u\u0161nic, n\u00e1hrdeln\u00edk\u016f nebo bro\u017e\u00ed.\r\n\r\nKrom\u011b sv\u00e9 vizu\u00e1ln\u00ed kr\u00e1sy jsou op\u00e1ly cen\u011bny i pro svou vz\u00e1cnost a kulturn\u00ed symboliku. U\u017e od starov\u011bku byly obdivov\u00e1ny mnoha n\u00e1rody a civilizacemi. B\u00fdvaly vn\u00edm\u00e1ny jako kameny nad\u011bje, \u010distoty, v\u011brnosti \u010di inspirace.","link":"https:\/\/www.e-gems.cz\/en\/kategorie\/brousene-kameny\/opal\/","name":"Op\u00e1l","slug":"opal","taxonomy":"product_cat","parent":19,"meta":[],"menu_order":81,"acf":[],"_links":{"self":[{"href":"https:\/\/www.e-gems.cz\/en\/wp-json\/wp\/v2\/product_cat\/105","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.e-gems.cz\/en\/wp-json\/wp\/v2\/product_cat"}],"about":[{"href":"https:\/\/www.e-gems.cz\/en\/wp-json\/wp\/v2\/taxonomies\/product_cat"}],"up":[{"embeddable":true,"href":"https:\/\/www.e-gems.cz\/en\/wp-json\/wp\/v2\/product_cat\/19"}],"wp:post_type":[{"href":"https:\/\/www.e-gems.cz\/en\/wp-json\/wp\/v2\/product?product_cat=105"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}