{"id":5602,"date":"2024-12-04T21:19:44","date_gmt":"2024-12-04T19:19:44","guid":{"rendered":"http:\/\/www.e-gems.cz\/?post_type=kamen&#038;p=5602"},"modified":"2025-02-18T18:47:12","modified_gmt":"2025-02-18T16:47:12","slug":"ametyst","status":"publish","type":"kamen","link":"https:\/\/www.e-gems.cz\/en\/kamen\/ametyst\/","title":{"rendered":"Ametyst"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Historie<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ametyst je bezesporu jedn\u00edm z&nbsp;nejzn\u00e1m\u011bj\u0161\u00edch a z\u00e1rove\u0148 nejpou\u017e\u00edvan\u011bj\u0161\u00edch drah\u00fdch kamen\u016f, kter\u00fd fascinuje lidstvo ji\u017e po stalet\u00ed. N\u00e1zev ametyst poch\u00e1z\u00ed z \u0159eck\u00e9ho slova <em>amethystos<\/em>, co\u017e znamen\u00e1 st\u0159\u00edzliv\u00fd. Ve star\u00e9m \u0158ecku byl tento k\u00e1men spojen s bohem v\u00edna Dion\u00fdsem; v\u011b\u0159ilo se, \u017ee ametyst chr\u00e1n\u00ed sv\u00e9 majitele p\u0159ed opilstv\u00edm a obecn\u011b p\u0159ed otravami. Stejn\u00e1 obl\u00edbenost byla u ametystu zaznamen\u00e1na i ve star\u00e9m Egypt\u011b, kde byl \u010dasto vyu\u017e\u00edv\u00e1n k&nbsp;v\u00fdrob\u011b nejr\u016fzn\u011bj\u0161\u00edch \u0161perk\u016f.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">K\u0159es\u0165ansk\u00fd sv\u011bt zn\u00e1 ametysty p\u0159edev\u0161\u00edm jako sou\u010d\u00e1st biskupsk\u00fdch a pape\u017esk\u00fdch prsten\u016f. Fialov\u00e1 barva m\u00e1 toti\u017e v&nbsp;k\u0159es\u0165anstv\u00ed zaj\u00edmav\u00e9 postaven\u00ed \u2013 ve st\u0159edov\u011bku byl Kristus zobrazov\u00e1n po sv\u00e9m zmrtv\u00fdchvst\u00e1n\u00ed ve fialov\u00e9m \u0161atu, co\u017e byl symbol jeho znovuzrozen\u00ed a napln\u011bn\u00ed posl\u00e1n\u00ed \u2013 v t\u00e9 chv\u00edli byl skute\u010dn\u00fdm \u010dlov\u011bkem i skute\u010dn\u00fdm Bohem. Proto je fialov\u00e1 v&nbsp;k\u0159es\u0165ansk\u00e9m pojet\u00ed&nbsp;liturgickou barvou pa\u0161ij\u00ed a pok\u00e1n\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Vlastnosti<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Kvalitn\u00ed ametyst pat\u0159\u00ed spolu s ametr\u00edny mezi nejdra\u017e\u0161\u00ed a nej\u017e\u00e1dan\u011bj\u0161\u00ed odr\u016fdy k\u0159emene a jeho barva se pohybuje od velmi sv\u011btle fialov\u00e9 a\u017e po temn\u011b fialovou. Zcela nejvz\u00e1cn\u011bj\u0161\u00ed barvou je syt\u011b fialov\u00e1 s&nbsp;modrav\u00fdmi a\u017e \u010dervenav\u00fdmi odlesky. <a href=\"https:\/\/www.silvego.cz\/clanek\/71\/ametyst-vlastnosti-znameni-a-jak-drahy-kamen-poznat\/\" target=\"_blank\" rel=\"noopener\">Tato barva je zp\u016fsobena p\u0159\u00edtomnost\u00ed stopov\u00e9ho mno\u017estv\u00ed \u017eeleza a hlin\u00edku ve struktu\u0159e krystalu<\/a> v&nbsp;kombinaci s&nbsp;p\u016fsoben\u00edm p\u0159irozen\u00e9 radioaktivity z&nbsp;okol\u00ed (ametyst s\u00e1m o sob\u011b radioaktivn\u00ed nen\u00ed).&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Jestli\u017ee je p\u0159irozen\u011b nebo i um\u011ble zah\u0159\u00e1t\u00fd, ztr\u00e1c\u00ed ametyst svou charakteristickou barvu \u2013 nejprve \u017eloutne a\u017e n\u00e1sledn\u011b p\u0159i teplot\u011b 575 \u00b0C zml\u00e9\u010dn\u00ed (zb\u011bl\u00e1). Barva n\u011bkter\u00fdch ametyst\u016f nen\u00ed stabiln\u00ed, mohou tedy p\u0159edev\u0161\u00edm p\u016fsoben\u00edm slune\u010dn\u00edho sv\u011btla pozvolna ztr\u00e1cet barvu. Ametyst krystaluje v&nbsp;trigon\u00e1ln\u00ed soustav\u011b a jeho krystaly jsou \u010dasto prismatick\u00e9 (sloupcovit\u00e9) a zakon\u010den\u00e9 plochami romboedru (\u0161pi\u010dkou se \u0161esti plochami).&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Geneze<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ametyst vznik\u00e1 p\u0159ev\u00e1\u017en\u011b v sope\u010dn\u00fdch a metamorfovan\u00fdch hornin\u00e1ch, kde se formuj\u00ed krystalov\u00e9 dutiny. Tyto dutiny se vypl\u0148uj\u00ed miner\u00e1ln\u00edmi roztoky bohat\u00fdmi na k\u0159em\u00edk a \u017eelezo, kter\u00e9, jakmile se zdroje schlad\u00ed, za\u010dnou krystalizovat do r\u016fzn\u00fdch forem, v\u010detn\u011b ametystu. Velikost krystal\u016f je z\u00e1visl\u00e1 na dob\u011b (d\u00e9lce) krystalov\u00e1n\u00ed, nikoliv na teplot\u011b. Zaj\u00edmavost\u00ed je, \u017ee i p\u0159i ni\u017e\u0161\u00edch teplot\u00e1ch mohou vznikat velik\u00e9 krystaly.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">V\u00fdskyt<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Ametyst se nach\u00e1z\u00ed v r\u016fzn\u00fdch regionech po cel\u00e9m sv\u011bt\u011b. Nejv\u00fdznamn\u011bj\u0161\u00ed nalezi\u0161t\u011b jsou v Braz\u00edlii, Uruguayi, Z\u00e1padn\u00ed Africe a Zambii. V Braz\u00edlii se nach\u00e1zej\u00ed velk\u00e9 ametystov\u00e9 geody, kter\u00e9 jsou vysoce cen\u011bny pro svou kr\u00e1su a velikost. Dal\u0161\u00ed d\u016fle\u017eit\u00e9 zdroje ametystu zahrnuj\u00ed Kanadu, USA (zejm\u00e9na st\u00e1t Severn\u00ed Karol\u00edna) a Rusko, kde se ametyst historicky t\u011b\u017eil v oblasti Uralu.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Syntetick\u00e1 v\u00fdroba<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Syntetick\u00fd ametyst, respektive syntetick\u00fd k\u0159emen, byl poprv\u00e9 vyroben v roce 1970 a jeho v\u00fdroba se obvykle prov\u00e1d\u00ed pomoc\u00ed procesu hydroterm\u00e1ln\u00ed krystalizace, kter\u00fd napodobuje p\u0159\u00edrodn\u00ed podm\u00ednky, za kter\u00fdch se ametyst formuje. Syntetick\u00e9 kameny jsou \u010dasto vyr\u00e1b\u011bny v laborato\u0159\u00edch, co\u017e zaji\u0161\u0165uje jejich konzistentn\u00ed kvalitu a vlastnosti.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Syntetick\u00fd ametyst je vizu\u00e1ln\u011b prakticky stejn\u00fd jako p\u0159\u00edrodn\u00ed ametyst. Pro laika je nemo\u017en\u00e9 tyto dva kameny v&nbsp;brou\u0161en\u00e9m stavu od sebe rozeznat a syntetick\u00fd ametyst je \u010dasto cenov\u011b dostupn\u011bj\u0161\u00ed alternativou k p\u0159\u00edrodn\u00edmu ametystu.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Historie Ametyst je bezesporu jedn\u00edm z&nbsp;nejzn\u00e1m\u011bj\u0161\u00edch a z\u00e1rove\u0148 nejpou\u017e\u00edvan\u011bj\u0161\u00edch drah\u00fdch kamen\u016f, kter\u00fd fascinuje lidstvo ji\u017e po stalet\u00ed. N\u00e1zev ametyst poch\u00e1z\u00ed z \u0159eck\u00e9ho slova amethystos, co\u017e znamen\u00e1 st\u0159\u00edzliv\u00fd. Ve star\u00e9m \u0158ecku byl tento k\u00e1men spojen s bohem v\u00edna Dion\u00fdsem; v\u011b\u0159ilo se, \u017ee ametyst chr\u00e1n\u00ed sv\u00e9 majitele p\u0159ed opilstv\u00edm a obecn\u011b p\u0159ed otravami. Stejn\u00e1 obl\u00edbenost byla u [&hellip;]<\/p>\n","protected":false},"featured_media":7146,"template":"","meta":{"_acf_changed":false,"inline_featured_image":false},"class_list":["post-5602","kamen","type-kamen","status-publish","has-post-thumbnail","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.e-gems.cz\/en\/wp-json\/wp\/v2\/kamen\/5602","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\/7146"}],"wp:attachment":[{"href":"https:\/\/www.e-gems.cz\/en\/wp-json\/wp\/v2\/media?parent=5602"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}