{"id":346,"count":4,"description":"Rubelit je \u010derven\u00e1 varieta turmal\u00ednu, pat\u0159\u00edc\u00ed do skupiny elbait\u016f \u2013 turmal\u00edn\u016f bohat\u00fdch na lithium. N\u00e1zev elbait poch\u00e1z\u00ed od ostrova Elba v It\u00e1lii, kde byly tyto miner\u00e1ly poprv\u00e9 pops\u00e1ny v roce 1913. \u010cerven\u00e9 zabarven\u00ed rubelitu zp\u016fsobuje p\u0159\u00edtomnost manganu, p\u0159\u00edpadn\u011b kombinace manganu a \u017eeleza.\r\n\r\nP\u0159esto\u017ee byl rubelit jako samostatn\u00fd miner\u00e1ln\u00ed druh uzn\u00e1n a\u017e s rozvojem modern\u00ed mineralogie, neznamen\u00e1 to, \u017ee by se v historii nevyskytoval. Naopak \u2013 ve star\u0161\u00edch \u0161perc\u00edch se s rubelitem \u010dasto setk\u00e1v\u00e1me, jen byl myln\u011b pova\u017eov\u00e1n za rub\u00edn. Typick\u00fdm p\u0159\u00edkladem je slavn\u00fd \u201erub\u00edn\u201c ve Svatov\u00e1clavsk\u00e9 korun\u011b, kter\u00fd je ve skute\u010dnosti rubelitem.\r\n\r\nBarva rubelitu se pohybuje od syt\u011b r\u016f\u017eov\u00e9 po \u010dervenou. Na rozd\u00edl od rub\u00ednu vykazuje rubelit v\u00fdrazn\u00fd pleochroismus \u2013 tedy jev, kdy k\u00e1men p\u0159i pohledu z r\u016fzn\u00fdch \u00fahl\u016f m\u011bn\u00ed barevn\u00fd odst\u00edn.\r\n\r\nRubelity vznikaj\u00ed v tzv. lithn\u00fdch pegmatitech, co\u017e jsou hrubozrnn\u00e9 magmatick\u00e9 horniny bohat\u00e9 na vz\u00e1cn\u00e9 prvky. Kvalitn\u00ed surovina vhodn\u00e1 k brou\u0161en\u00ed poch\u00e1z\u00ed p\u0159edev\u0161\u00edm z Braz\u00edlie, Mosambiku, Nig\u00e9rie a Demokratick\u00e9 republiky Kongo.\r\n\r\nRubelity se vyskytuj\u00ed i na n\u011bkolika lokalit\u00e1ch v \u010cesk\u00e9 republice, av\u0161ak kameny z t\u011bchto nalezi\u0161\u0165 nedosahuj\u00ed kvality pot\u0159ebn\u00e9 pro fasetov\u00e9 brou\u0161en\u00ed.\r\n\r\n","link":"https:\/\/www.e-gems.cz\/kategorie\/brousene-kameny\/turmalin-rubelit\/","name":"Turmal\u00edn rubelit","slug":"turmalin-rubelit","taxonomy":"product_cat","parent":19,"meta":[],"menu_order":0,"acf":[],"_links":{"self":[{"href":"https:\/\/www.e-gems.cz\/en\/wp-json\/wp\/v2\/product_cat\/346","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=346"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}