{"id":5680,"date":"2024-12-06T20:51:07","date_gmt":"2024-12-06T18:51:07","guid":{"rendered":"http:\/\/www.e-gems.cz\/?post_type=kamen&#038;p=5680"},"modified":"2025-03-25T10:57:47","modified_gmt":"2025-03-25T08:57:47","slug":"pezzotait","status":"publish","type":"kamen","link":"https:\/\/www.e-gems.cz\/en\/kamen\/pezzotait\/","title":{"rendered":"Pezzotait"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Historie<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Pezzotait byl objeven pom\u011brn\u011b ned\u00e1vno a byl pojmenov\u00e1n na po\u010dest italsk\u00e9ho mineraloga Federica Pezzotta. Tento drah\u00fd k\u00e1men je extr\u00e9mn\u011b vz\u00e1cn\u00fd a vysoce cen\u011bn\u00fd mezi investory.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Vlastnosti<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Pezzotait je vz\u00e1cn\u00fd drah\u00fd k\u00e1men se zaj\u00edmav\u00fdm chemick\u00fdm slo\u017een\u00edm Cs(Be\u2082Li)Al\u2082Si\u2086O\u2081\u2088. Pezzotait je bl\u00edzk\u00fd p\u0159\u00edbuzn\u00fd beryl\u016fm a vyskytuje se nej\u010dast\u011bji v odst\u00ednech r\u016f\u017eov\u00e9, od jemn\u00e9 sv\u011btle r\u016f\u017eov\u00e9 a\u017e po sytou purpurovou r\u016f\u017eovou. Tyto odst\u00edny jsou zp\u016fsobeny p\u0159\u00edtomnost\u00ed lithia a stopov\u00fdch prvk\u016f, kter\u00e9 ovliv\u0148uj\u00ed jeho zbarven\u00ed. Barva pezzotaitu je \u010dasto intenzivn\u011bj\u0161\u00ed ne\u017e u podobn\u00fdch r\u016f\u017eov\u00fdch beryl\u016f, jako je morganit. Na Mohsov\u011b stupnici tvrdosti dosahuje pezzotait hodnoty kolem 8, co\u017e ho \u010din\u00ed vhodn\u00fdm pro pou\u017eit\u00ed v&nbsp;klenotnictv\u00ed. Pezzotait je zpravidla pr\u016fhledn\u00fd a\u017e pr\u016fsvitn\u00fd; vysoce kvalitn\u00ed kameny jsou pr\u016fhledn\u00e9 zcela. Index lomu tohoto kamene se pohybuje mezi 1,615 a 1,619.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Geneze<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Pezzotait vznik\u00e1 v pegmatitov\u00fdch \u017eil\u00e1ch, co\u017e jsou geologick\u00e9 \u00fatvary bohat\u00e9 na vz\u00e1cn\u00e9 prvky, jako je lithium, cesium a beryllium. Tyto \u017e\u00edly vznikaj\u00ed z vysoce koncentrovan\u00fdch magmatick\u00fdch roztok\u016f, kter\u00e9 krystalizuj\u00ed za relativn\u011b n\u00edzk\u00fdch teplot a tlaku, co\u017e umo\u017e\u0148uje r\u016fst velk\u00fdch a dob\u0159e vyvinut\u00fdch krystal\u016f.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Pezzotait je \u00fazce spojen s miner\u00e1ly jako lepidolit a dal\u0161\u00edmi lithn\u00fdmi sl\u00eddami, kter\u00e9 se tak\u00e9 nach\u00e1zej\u00ed v pegmatitech. Vzhledem k jeho vz\u00e1cnosti a specifi\u010dnosti podm\u00ednek, za kter\u00fdch se tvo\u0159\u00ed, se pezzotait vyskytuje pouze na n\u011bkolika m\u00e1lo lokalit\u00e1ch po cel\u00e9m sv\u011bt\u011b.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">V\u00fdskyt<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Pezzotait byl poprv\u00e9 objeven na po\u010d\u00e1tku 21. stolet\u00ed a jeho nejv\u00fdznamn\u011bj\u0161\u00ed nalezi\u0161t\u011b se nal\u00e9z\u00e1 v&nbsp;oblasti Ambatovita (pegmatit Sakavalana) u vesnice Mandosonoro v&nbsp;provincii Fianarantsoa na Madagaskaru.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Imitace<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Jako imitace pezzotaitu pro zcela neznal\u00e9 slou\u017e\u00ed syt\u00e9 morganity.&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\">Synteticky se pezzotait nevyr\u00e1b\u00ed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Investi\u010dn\u00ed potenci\u00e1l<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0160perky s pezzotaitem jsou extr\u00e9mn\u011b vz\u00e1cn\u00e9, proto\u017ee jeho dostupnost je omezen\u00e1. Pezzotait byl nicm\u00e9n\u011b ji\u017e v&nbsp;minulosti pou\u017eit v n\u011bkolika v\u00fdznamn\u00fdch klenotnick\u00fdch d\u00edlech; tyto \u0161perky jsou \u010dasto vyr\u00e1b\u011bny na zak\u00e1zku a p\u0159edstavuj\u00ed jedine\u010dn\u00e9 kousky, kter\u00e9 se budou p\u0159ed\u00e1vat v&nbsp;r\u00e1mci rodiny z generace na generaci. Pezzotait je unik\u00e1tn\u00ed investi\u010dn\u00ed p\u0159\u00edle\u017eitost.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Historie Pezzotait byl objeven pom\u011brn\u011b ned\u00e1vno a byl pojmenov\u00e1n na po\u010dest italsk\u00e9ho mineraloga Federica Pezzotta. Tento drah\u00fd k\u00e1men je extr\u00e9mn\u011b vz\u00e1cn\u00fd a vysoce cen\u011bn\u00fd mezi investory. Vlastnosti Pezzotait je vz\u00e1cn\u00fd drah\u00fd k\u00e1men se zaj\u00edmav\u00fdm chemick\u00fdm slo\u017een\u00edm Cs(Be\u2082Li)Al\u2082Si\u2086O\u2081\u2088. Pezzotait je bl\u00edzk\u00fd p\u0159\u00edbuzn\u00fd beryl\u016fm a vyskytuje se nej\u010dast\u011bji v odst\u00ednech r\u016f\u017eov\u00e9, od jemn\u00e9 sv\u011btle r\u016f\u017eov\u00e9 a\u017e po [&hellip;]<\/p>\n","protected":false},"featured_media":7914,"template":"","meta":{"_acf_changed":false,"inline_featured_image":false},"class_list":["post-5680","kamen","type-kamen","status-publish","has-post-thumbnail","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.e-gems.cz\/en\/wp-json\/wp\/v2\/kamen\/5680","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\/7914"}],"wp:attachment":[{"href":"https:\/\/www.e-gems.cz\/en\/wp-json\/wp\/v2\/media?parent=5680"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}