Tugtupit je velmi vz\u00e1cn\u00fd miner\u00e1l poch\u00e1zej\u00edc\u00ed p\u0159edev\u0161\u00edm z Gr\u00f3nska. Na prvn\u00ed pohled m\u016f\u017ee p\u016fsobit nen\u00e1padn\u011b \u2013 obvykle m\u00e1 b\u00edlou a\u017e sv\u011btle r\u016f\u017eovou barvu \u2013 av\u0161ak po oz\u00e1\u0159en\u00ed ultrafialov\u00fdm (UV) sv\u011btlem, p\u0159\u00edpadn\u011b p\u0159i vystaven\u00ed p\u0159\u00edm\u00e9mu slune\u010dn\u00edmu svitu (nejl\u00e9pe v letn\u00edch nebo zimn\u00edch m\u011bs\u00edc\u00edch), doch\u00e1z\u00ed k v\u00fdrazn\u00e9 zm\u011bn\u011b barvy. K\u00e1men se zbarv\u00ed do \u010derven\u00fdch a\u017e syt\u011b r\u016f\u017eov\u00fdch odst\u00edn\u016f a tato zm\u011bna p\u0159etrv\u00e1v\u00e1 i po ukon\u010den\u00ed oz\u00e1\u0159en\u00ed. Tento jev se ozna\u010duje jako tenebrescence.<\/p>\n
P\u0159\u00ed\u010dinou zm\u011bny barvy jsou drobn\u00e9 poruchy v krystalov\u00e9 m\u0159\u00ed\u017ece tugtupitu na atom\u00e1rn\u00ed \u00farovni a p\u0159\u00edtomnost stopov\u00fdch p\u0159\u00edm\u011bs\u00ed, nap\u0159\u00edklad s\u00edry nebo chloru. P\u0159i oz\u00e1\u0159en\u00ed UV sv\u011btlem doch\u00e1z\u00ed k p\u0159esunu elektron\u016f na jin\u00e1 m\u00edsta v krystalov\u00e9 m\u0159\u00ed\u017ece, \u010d\u00edm\u017e se m\u011bn\u00ed zp\u016fsob, jak\u00fdm miner\u00e1l pohlcuje a odr\u00e1\u017e\u00ed viditeln\u00e9 sv\u011btlo. V\u00fdsledkem je pozorovan\u00e1 barevn\u00e1 zm\u011bna, nej\u010dast\u011bji do \u010derven\u00e9 \u010di syt\u011b r\u016f\u017eov\u00e9 barvy.<\/p>\n
Pokud je tugtupit ponech\u00e1n ve tm\u011b nebo zah\u0159\u00e1t, elektrony se postupn\u011b vracej\u00ed do p\u016fvodn\u00edho stavu a barva kamene pozvolna bledne.<\/p>\n
Tugtupit je mimo\u0159\u00e1dn\u011b zaj\u00edmav\u00fd t\u00edm, \u017ee v sob\u011b kombinuje dva optick\u00e9 jevy: fluorescenci, kdy pod UV sv\u011btlem okam\u017eit\u011b z\u00e1\u0159\u00ed, a tenebrescenci, p\u0159i n\u00ed\u017e barva p\u0159etrv\u00e1v\u00e1 i po vypnut\u00ed zdroje UV z\u00e1\u0159en\u00ed.<\/p>\n
Vzhledem ke sv\u00e9 vz\u00e1cnosti se tugtupit v brou\u0161en\u00e9 podob\u011b t\u00e9m\u011b\u0159 v\u017edy vyskytuje jako kabo\u0161on. Fasetov\u011b brou\u0161en\u00e9 kusy jsou mimo\u0159\u00e1dn\u011b vz\u00e1cn\u00e9.<\/p>\n
Nab\u00edzen\u00fd tugtupit (Na\u2084(AlBeSi\u2084O\u2081\u2082)Cl) poch\u00e1z\u00ed z oblasti Kvanefjeld Plateau v komplexu Il\u00edmaussaq, pobl\u00ed\u017e m\u011bsta Narsaq v regionu Kitaa v Gr\u00f3nsku. Na fotografii je tmav\u0161\u00ed exempl\u00e1\u0159 zachycen bezprost\u0159edn\u011b po oz\u00e1\u0159en\u00ed ultrafialov\u00fdm sv\u011btlem, zat\u00edmco sv\u011btlej\u0161\u00ed kus byl fotografov\u00e1n po sedmi dnech uchov\u00e1v\u00e1n\u00ed ve tm\u011b. Velikost nab\u00edzen\u00e9ho kamene je 5,05 x 4,59 mm. Tento velmi vz\u00e1cn\u00fd drah\u00fd k\u00e1men je vhodn\u00fd do jak\u00e9hokoliv \u0161perku. Jestli\u017ee, si tento nab\u00edzen\u00fd tugtupit zakoup\u00edte a p\u0159ijde V\u00e1m po\u0161tou, bude m\u00edt sv\u011btle r\u016f\u017eovou ml\u00e9\u010dnou barvu, a\u017e po osv\u00edcen\u00ed dlouhovlnn\u00fdm ultrafialov\u00fdm sv\u011btlem z\u00edsk\u00e1 syt\u011b \u010dervenou jako je na fotografii.<\/p>\n","protected":false},"excerpt":{"rendered":"
Tugtupit je mimo\u0159\u00e1dn\u011b vz\u00e1cn\u00fd miner\u00e1l poch\u00e1zej\u00edc\u00ed z Gr\u00f3nska. V b\u011b\u017en\u00e9m stavu m\u00e1 b\u00edlou a\u017e sv\u011btle r\u016f\u017eovou barvu, kter\u00e1 se po oz\u00e1\u0159en\u00ed UV sv\u011btlem nebo slune\u010dn\u00edm svitem prom\u011bn\u00ed v syt\u011b r\u016f\u017eov\u00e9 a\u017e \u010derven\u00e9 odst\u00edny a p\u0159etrv\u00e1v\u00e1 i po ukon\u010den\u00ed oz\u00e1\u0159en\u00ed. Nab\u00edzen\u00fd tugtupit poch\u00e1z\u00ed z oblasti Kvanefjeld Plateau v Gr\u00f3nsku a po osv\u00edcen\u00ed dlouhovlnn\u00fdm UV sv\u011btlem z\u00edsk\u00e1v\u00e1 v\u00fdraznou syt\u011b \u010dervenou barvu.<\/p>\n","protected":false},"featured_media":9594,"template":"","meta":{"_acf_changed":false,"inline_featured_image":false},"product_brand":[],"product_cat":[106],"product_tag":[],"class_list":["post-9591","product","type-product","status-publish","has-post-thumbnail","product_cat-tugtupit","first","instock","shipping-taxable","purchasable","product-type-simple"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.e-gems.cz\/en\/wp-json\/wp\/v2\/product\/9591","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.e-gems.cz\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.e-gems.cz\/en\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.e-gems.cz\/en\/wp-json\/wp\/v2\/media\/9594"}],"wp:attachment":[{"href":"https:\/\/www.e-gems.cz\/en\/wp-json\/wp\/v2\/media?parent=9591"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.e-gems.cz\/en\/wp-json\/wp\/v2\/product_brand?post=9591"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.e-gems.cz\/en\/wp-json\/wp\/v2\/product_cat?post=9591"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.e-gems.cz\/en\/wp-json\/wp\/v2\/product_tag?post=9591"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}