{"id":5605,"date":"2024-12-04T21:33:49","date_gmt":"2024-12-04T19:33:49","guid":{"rendered":"http:\/\/www.e-gems.cz\/?post_type=kamen&#038;p=5605"},"modified":"2025-04-04T10:42:46","modified_gmt":"2025-04-04T08:42:46","slug":"astericky-star-granat","status":"publish","type":"kamen","link":"https:\/\/www.e-gems.cz\/en\/kamen\/astericky-star-granat\/","title":{"rendered":"Asterick\u00fd (star) gran\u00e1t"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Vlastnosti<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Asterick\u00fd gran\u00e1t, zn\u00e1m\u00fd tak\u00e9 jako star gran\u00e1t, je zpravidla almandin. Almandin pat\u0159\u00ed do skupiny gran\u00e1tu, jeho chemick\u00fd vzorec je Fe\u2083Al\u2082(SiO\u2084)\u2083 a na Mohsov\u011b stupnici dosahuje tvrdosti 7,5.\u00a0Zaj\u00edmavost\u00ed je, \u017ee se n\u011bkdy v\u00a0krystalu almandinu vyskytuj\u00ed hojn\u011b uspo\u0159\u00e1dan\u00e9 jehlice miner\u00e1lu rutilu, TiO<sub>2<\/sub>. Je-li gran\u00e1t vybrou\u0161en do formy kabo\u0161onu, rozkl\u00e1daj\u00ed tyto jehlice bodov\u00e9 sv\u011btlo a kolmo na pr\u016fb\u011bh jehlic tak vznik\u00e1 hv\u011bzda. Tato hv\u011bzda se pohybuje podle toho, jak nat\u00e1\u010d\u00edme se zdrojem sv\u011btla. Asterick\u00e9 gran\u00e1ty (almandiny) maj\u00ed zpravidla \u010dervenou a\u017e \u010dervenohn\u011bdou barvu a nejsou pln\u011b transparentn\u00ed, jeliko\u017e maj\u00ed m\u00edrn\u00fd ml\u00e9\u010dn\u00fd n\u00e1dech. Zaj\u00edmavost\u00ed rovn\u011b\u017e je, \u017ee asterismus m\u016f\u017ee b\u00fdt \u010dty\u0159c\u00edp\u00fd i \u0161estic\u00edp\u00fd. Asterick\u00e9 gran\u00e1ty jsou obl\u00edben\u00e9 u sb\u011bratel\u016f drah\u00fdch kamen\u016f.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Vlastnosti Asterick\u00fd gran\u00e1t, zn\u00e1m\u00fd tak\u00e9 jako star gran\u00e1t, je zpravidla almandin. Almandin pat\u0159\u00ed do skupiny gran\u00e1tu, jeho chemick\u00fd vzorec je Fe\u2083Al\u2082(SiO\u2084)\u2083 a na Mohsov\u011b stupnici dosahuje tvrdosti 7,5.\u00a0Zaj\u00edmavost\u00ed je, \u017ee se n\u011bkdy v\u00a0krystalu almandinu vyskytuj\u00ed hojn\u011b uspo\u0159\u00e1dan\u00e9 jehlice miner\u00e1lu rutilu, TiO2. Je-li gran\u00e1t vybrou\u0161en do formy kabo\u0161onu, rozkl\u00e1daj\u00ed tyto jehlice bodov\u00e9 sv\u011btlo a kolmo na [&hellip;]<\/p>\n","protected":false},"featured_media":7924,"template":"","meta":{"_acf_changed":false,"inline_featured_image":false},"class_list":["post-5605","kamen","type-kamen","status-publish","has-post-thumbnail","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.e-gems.cz\/en\/wp-json\/wp\/v2\/kamen\/5605","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.e-gems.cz\/en\/wp-json\/wp\/v2\/kamen"}],"about":[{"href":"https:\/\/www.e-gems.cz\/en\/wp-json\/wp\/v2\/types\/kamen"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.e-gems.cz\/en\/wp-json\/wp\/v2\/media\/7924"}],"wp:attachment":[{"href":"https:\/\/www.e-gems.cz\/en\/wp-json\/wp\/v2\/media?parent=5605"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}