Moissanit, prirodzene sa vyskytuj\u00faca forma karbidu krem\u00edka (SiC), sa nach\u00e1dza ako inkl\u00fazia v meteoritoch, korundov\u00fdch lo\u017eisk\u00e1ch a vz\u00e1cnych kimberlitoch. Moissanit sa d\u00e1 vytvori\u0165 aj umelo pomocou tradi\u010dn\u00fdch techn\u00edk spekania a lisovania za tepla v laborat\u00f3rnych podmienkach.<\/p>\n
Moissanitov\u00e9 drahokamy pou\u017e\u00edvan\u00e9 v \u0161perkoch sa zvy\u010dajne vyr\u00e1baj\u00fa synteticky v laborat\u00f3ri\u00e1ch. Tu sa dozviete, ako tento pozoruhodn\u00fd drahokam vznik\u00e1.<\/p>\n
Moissanit a diamant s\u00fa si v mnohom podobn\u00e9, ale maj\u00fa mnoho charakteristick\u00fdch vlastnost\u00ed, ktor\u00e9 ich odli\u0161uj\u00fa. Jednou z tak\u00fdchto vlastnost\u00ed je ich lesk - moissanit sa \u010dasto jav\u00ed jasnej\u0161\u00ed v\u010faka tomu, \u017ee viac l\u00e1me svetlo, \u010do mu dod\u00e1va viac \u017eivosti ako diamantu.<\/p>\n
Moissanit \u017eiari v\u010faka svojej d\u00fahovosti, ktor\u00e1 sa pri odr\u00e1\u017ean\u00ed a rozpty\u013eovan\u00ed svetla premie\u0148a na bezfarebn\u00fa d\u00fahu - tento efekt sa naz\u00fdva disperzia - a dod\u00e1va moissanitu jeho charakteristick\u00fd ohe\u0148 a kr\u00e1su. Ke\u010f je moissanit umiestnen\u00fd na tmavom pozad\u00ed, jeho brilantn\u00fd lesk je e\u0161te v\u00fdraznej\u0161\u00ed!<\/p>\n
Moissanit m\u00e1 mnoho spolo\u010dn\u00fdch vlastnost\u00ed s diamantom, napr\u00edklad vysok\u00fd index lomu. V\u010faka tomu je vysoko reflexn\u00fd, \u010do pri br\u00fasen\u00ed s fazetami vytv\u00e1ra ohromuj\u00faci a jasn\u00fd kame\u0148, ktor\u00fd zv\u00fdraz\u0148uje jeho vn\u00fatorn\u00fa kr\u00e1su. Preto sa moissanit u\u017e dlho pou\u017e\u00edva ako alternat\u00edva diamantu v \u0161perkoch; okrem toho je v\u010faka svojmu tvrd\u00e9mu povrchu, odolnosti vo\u010di teplu a schopnosti formova\u0165 sa do diskov vhodn\u00fd na pou\u017eitie ako zrkadlo v teleskopoch.<\/p>\n
Pr\u00edrodn\u00fd moissanit je mimoriadne vz\u00e1cny, preto vedci vyvinuli efekt\u00edvny proces jeho v\u00fdroby v laborat\u00f3rnych podmienkach. V\u010faka tomu si m\u00f4\u017eete vychutna\u0165 kr\u00e1su tohto \u00fa\u017easn\u00e9ho drahokamu za prijate\u013en\u00fa cenu bez toho, aby ste ho museli sami \u0165a\u017ei\u0165. Na ka\u017ed\u00fd kus vytvoren\u00fd pod\u013ea pr\u00edsnych ekologick\u00fdch a etick\u00fdch noriem poskytuje v\u00fdrobca Charles & Colvard do\u017eivotn\u00fa z\u00e1ruku.<\/p>\n
Jedine\u010dn\u00e9 vlastnosti karbidu krem\u00edka z neho robia fantastick\u00fd materi\u00e1l na v\u00fdrobu drah\u00fdch kame\u0148ov a \u0161perkov. Moissanit, ktor\u00fd je odoln\u00fd vo\u010di po\u0161kriabaniu v porovnan\u00ed s pr\u00edrodn\u00fdmi kame\u0148mi, vynik\u00e1 ako ekologick\u00e1 alternat\u00edva diamantu so \u017eiariv\u00fdm leskom prevy\u0161uj\u00facim v\u00e4\u010d\u0161inu \u0165a\u017een\u00fdch diamantov - je to \u00fa\u017easn\u00e1 ekologick\u00e1 vo\u013eba!<\/p>\n
Spolo\u010dnos\u0165 Icing On The Ring je hrd\u00e1 na to, \u017ee m\u00f4\u017ee pon\u00faknu\u0165 moissanit Charles & Colvard, laborat\u00f3rne pestovan\u00fd drahokam, ktor\u00fd m\u00e1 patentovan\u00fd v\u00fdrobn\u00fd proces. Od roku 1998 vytv\u00e1ra spolo\u010dnos\u0165 Charles & Colvard n\u00e1dhern\u00e9 simulanty diamantov z tohto pozoruhodn\u00e9ho drah\u00e9ho kame\u0148a s do\u017eivotnou z\u00e1rukou proti opotrebovaniu - dostupn\u00e9 len prostredn\u00edctvom Icing On The Ring!<\/p>\n
Moissanit m\u00e1 mimoriadne vysok\u00fd index lomu a n\u00edzku disperziu, \u010do vytv\u00e1ra efekt podobn\u00fd diamantu pri ove\u013ea ni\u017e\u0161\u00edch n\u00e1kladoch. Okrem toho sa v\u010faka svojmu tvrd\u00e9mu a odoln\u00e9mu povrchu s tvrdos\u0165ou pod\u013ea Mohsovej stupnice 9 1\/4 skvele hod\u00ed na mnoh\u00e9 praktick\u00e9 pou\u017eitia ako br\u00fasny alebo polovodi\u010dov\u00fd materi\u00e1l, nehovoriac o tom, \u017ee sa pred\u00e1va ako alternat\u00edva drah\u00e9ho kame\u0148a s podobn\u00fdmi farbami a hmotnos\u0165ou ako jeho diamantov\u00fd n\u00e1protivok.<\/p>\n
Moissanit, pomenovan\u00fd na po\u010des\u0165 franc\u00fazskeho chemika Ferdinanda Henriho Moissana, bol p\u00f4vodne objaven\u00fd vo fragmentoch meteoritu, ktor\u00fd v roku 1893 vytvoril ka\u0148on Diablo alebo meteorick\u00fd kr\u00e1ter v Arizone, a n\u00e1sledne v r\u00f4znych metamorfovan\u00fdch hornin\u00e1ch vr\u00e1tane peridotitov, serpentinitov (Xu et al. 2008) a podiformn\u00fdch chromititov (Bai et al. 2000), karbonatitov, apatitov a kimberlitov (Lyakhovich 1980; Trumbull 2009). V\u0161etky tieto horniny sa prezentuj\u00fa ako idiomorfn\u00e9 kry\u0161t\u00e1ly s leskl\u00fdmi povrchmi na pyram\u00eddov\u00fdch ploch\u00e1ch, zatia\u013e \u010do matn\u00e9 povrchy na ploch\u00fdch stran\u00e1ch pripom\u00ednaj\u00fa hviezdicov\u00e9 zhluky alebo podobn\u00e9 v\u00fd\u010dnelky podobn\u00e9 hviezdicov\u00fdm zhlukom.<\/p>\n
V niektor\u00fdch pr\u00edpadoch je moissanit spojen\u00fd s limonitick\u00fdm materi\u00e1lom, do ktor\u00e9ho prenik\u00e1 kovov\u00e9 \u017eelezo. In\u00e9 vzorky vykazuj\u00fa r\u00f4zne text\u00farne charakteristiky a f\u00e1zov\u00e9 zoskupenia, ktor\u00e9 nazna\u010duj\u00fa viacero procesov ved\u00facich k jeho vzniku, pri\u010dom nie je mo\u017en\u00e9 jednozna\u010dne ur\u010di\u0165, ktor\u00fd typ reakcie viedol k jeho vzniku. Jeden z uv\u00e1dzan\u00fdch pr\u00edpadov je peridotit s klinopyrox\u00e9nom aj ortopyrox\u00e9nom s hodnotami pl\u00e1\u0161\u0165ov\u00e9ho X Mg medzi 0,90-1,00, ktor\u00fd metasomatizoval na moissanit a apatit (Gao a Liu 2008).<\/p>\n
P\u00f4vod tohto miner\u00e1lu je st\u00e1le nezn\u00e1my; pod\u013ea niektor\u00fdch te\u00f3ri\u00ed by mohol vznikn\u00fa\u0165 bu\u010f v oxida\u010dnej z\u00f3ne silik\u00e1tovej taveniny, ako alot\u00e1t uhl\u00edka z metasomatizovan\u00e9ho peridotitu, alebo v o\u017eiarenej magnezitovo-kvarcitovo-silik\u00e1tovej tavenine; pod\u013ea inej te\u00f3rie vznik\u00e1 ako alot\u00e1t krem\u00edka z reakci\u00ed por\u00e9zneho grafitu. Bez oh\u013eadu na to, kde alebo ako vznik\u00e1, moissanit je ve\u013emi zriedkav\u00fd, pri\u010dom v\u00e4\u010d\u0161ina vzoriek z\u00edskan\u00fdch z koncentr\u00e1tov \u0165a\u017ek\u00fdch miner\u00e1lov nem\u00e1 k dispoz\u00edcii ve\u013ea inform\u00e1ci\u00ed o text\u00fare alebo text\u00farnom kontexte; v niektor\u00fdch pr\u00edpadoch sa Fe-silicidy alebo kovov\u00fd krem\u00edk m\u00f4\u017eu tie\u017e prip\u00e1ja\u0165 k jednotliv\u00fdm kry\u0161t\u00e1lom pripojen\u00fdm k jednotliv\u00fdm kry\u0161t\u00e1lom.<\/p>\n
Karbid krem\u00edka (SiC) sa prirodzene nach\u00e1dza v moissanite, mimoriadne vz\u00e1cnom miner\u00e1li. SiC sa vyr\u00e1ba vo forme pr\u00e1\u0161ku aj kry\u0161t\u00e1lov na pou\u017eitie ako br\u00fasivo, preto\u017ee jeho tvrdos\u0165 na Mohsovej stupnici dosahuje 9 stup\u0148ov, \u010d\u00edm prevy\u0161uje diamant s hodnotou 10. V\u010faka tomu je SiC jedn\u00fdm z najtvrd\u0161\u00edch pr\u00edrodn\u00fdch materi\u00e1lov na svete; okrem toho sa vo ve\u013ekej miere pou\u017e\u00edva v n\u00e1strojoch, keramick\u00fdch dosk\u00e1ch pre nepriestreln\u00e9 vesty, polovodi\u010dov\u00fdch elektronick\u00fdch zariadeniach, ako s\u00fa sveteln\u00e9 di\u00f3dy (LED), detektoroch v prv\u00fdch r\u00e1di\u00e1ch at\u010f.<\/p>\n
Moissanit bol pomenovan\u00fd na po\u010des\u0165 franc\u00fazskeho chemika Henriho Moissana, ktor\u00fd ho objavil pri sk\u00faman\u00ed vzoriek horn\u00edn z meteoritick\u00e9ho kr\u00e1tera Canyon Diablo v Arizone v roku 1893. Najprv si ich pom\u00fdlil s diamantmi a bol sklaman\u00fd, a\u017e k\u00fdm sa v roku 1904 nedozvedel, \u017ee v skuto\u010dnosti ide o kry\u0161t\u00e1ly karbidu krem\u00edka.<\/p>\n
Moissanit je tvrd\u0161\u00ed a odolnej\u0161\u00ed vo\u010di po\u0161kriabaniu ako zaf\u00edr alebo rub\u00edn, a to v\u010faka vy\u0161\u0161ej Mohsovej tvrdosti, ktor\u00e1 ud\u00e1va, ko\u013eko \u0161krabancov materi\u00e1l znesie, ne\u017e pod\u013eahne. Moissanit vydr\u017e\u00ed viac ako mili\u00f3n \u0161krabancov - viac ako 10-kr\u00e1t viac ako diamant.<\/p>\n
Moissanit vynik\u00e1 ako v\u00fdnimo\u010dn\u00fd drahokam v\u010faka svojej trvanlivosti, n\u00edzkej hmotnosti a kr\u00e1snemu odtie\u0148u. Vyzna\u010duje sa svetl\u00fdmi sivozelen\u00fdmi odtie\u0148mi s v\u00fdnimo\u010dne vysok\u00fdm indexom lomu; odr\u00e1\u017ea viac vidite\u013en\u00e9ho spektra ako v\u00e4\u010d\u0161ina drah\u00fdch kame\u0148ov a dod\u00e1va tomuto drahokamu charakteristick\u00fd lesk a ohe\u0148.<\/p>\n
Vedci sa od objavenia moissanitu sna\u017eia napodobni\u0165 jeho z\u00e1zra\u010dn\u00e9 vlastnosti. V 90. rokoch 20. storo\u010dia sa v\u0161ak v Research Triangle Park v Severnej Karol\u00edne objavil inovat\u00edvny proces v\u00fdroby ve\u013ek\u00fdch kry\u0161t\u00e1lov moissanitu pre spolo\u010dnos\u0165 Charles & Colvard.<\/p>\n
Met\u00f3da tepeln\u00e9ho pestovania n\u00e1m umo\u017e\u0148uje vyr\u00e1ba\u0165 \u00fa\u017easn\u00e9 drahokamy \u0161perkovej kvality za zlomok ceny \u0165a\u017een\u00fdch diamantov, \u010d\u00edm sa z\u00edskavaj\u00fa n\u00e1dhern\u00e9 drahokamy za zlomok ich celkovej hodnoty. Oslniv\u00e9 kry\u0161t\u00e1ly tancuj\u00fa s iskrami lesku, ktor\u00e9 uchv\u00e1tia ka\u017ed\u00e9ho, kto ich uvid\u00ed; od ich vn\u00fatornej kr\u00e1sy a zvodnej gen\u00e9zy a\u017e po vytvorenie \u00fa\u017easn\u00e9ho nosite\u013en\u00e9ho drahokamu s trvalou pr\u00ed\u0165a\u017elivos\u0165ou pre cel\u00e9 gener\u00e1cie.<\/p>\n
Karbid krem\u00edka (SiC) je inertn\u00fd miner\u00e1l s tvrd\u00fdmi a krehk\u00fdmi vlastnos\u0165ami, ktor\u00fd vytv\u00e1ra kry\u0161t\u00e1ly r\u00f4znych tvarov. SiC sa \u010dasto nach\u00e1dza v meteoritoch alebo drah\u00fdch kame\u0148och.<\/p>\n
Henri Moissan objavil moissanit pri sk\u00faman\u00ed horn\u00edn z arizonsk\u00e9ho meteorick\u00e9ho kr\u00e1tera v roku 1893. Najprv si jeho kry\u0161t\u00e1ly pom\u00fdlil s diamantmi, ale nesk\u00f4r pri sk\u00faman\u00ed pod mikroskopom s vysok\u00fdm rozl\u00ed\u0161en\u00edm rozpoznal ich skuto\u010dn\u00fa identitu ako karbid krem\u00edka.<\/p>\n
Odvtedy vedci vyr\u00e1baj\u00fa syntetick\u00fd moissanit v laborat\u00f3ri\u00e1ch. Tento drahokam, ktor\u00fd je atrakt\u00edvnou a odolnou alternat\u00edvou diamantov, vzbudil \u010dasom ve\u013ek\u00fd z\u00e1ujem vedcov. Moissanit m\u00e1 dvojit\u00fa refrakciu - svetlo vstupuj\u00face do jeho stredu sa pred lomom smerom von rozdel\u00ed na dve farby - a vytv\u00e1ra tak lesk a ohe\u0148, ktor\u00fd sa vyrovn\u00e1 diamantom; v\u010faka tejto vlastnosti sa moissanit za\u010dal s ob\u013eubou pou\u017e\u00edva\u0165 aj na v\u00fdrobu \u0161perkov - najm\u00e4 z\u00e1snubn\u00fdch prste\u0148ov!<\/p>\n
Tvrd\u00fd gran\u00e1t, ktor\u00fd je desa\u0165kr\u00e1t hustej\u0161\u00ed ako diamant, je jedn\u00fdm z najtvrd\u0161\u00edch a najodolnej\u0161\u00edch miner\u00e1lov na Zemi, tak\u017ee je ve\u013emi odoln\u00fd vo\u010di po\u0161kriabaniu. Je ide\u00e1lny na prstene, preto\u017ee odol\u00e1va ka\u017edodenn\u00e9mu opotrebovaniu bez toho, aby pod tlakom praskol - nezamie\u0148ajte si ho s kubick\u00fdm zirk\u00f3nom, ktor\u00fd nie je skuto\u010dnou n\u00e1hradou diamantu, ale tvor\u00ed ho syntetick\u00fd kry\u0161t\u00e1l z oxidu zirk\u00f3nnat\u00e9ho.<\/p>\n
Vzh\u013eadom na vz\u00e1cnos\u0165 moissanitu je v\u00e4\u010d\u0161ina dnes dostupn\u00fdch \u0161perkov z neho vypestovan\u00e1 v laborat\u00f3riu. Vyr\u00e1ba sa rovnak\u00fdm postupom ako diamanty, ale namiesto toho sa pou\u017e\u00edva pr\u00e1\u0161ok karbidu krem\u00edka.<\/p>\n
Tento proces zah\u0155\u0148a zahrievanie zmesi pr\u00e1\u0161kov\u00e9ho karbidu krem\u00edka a tavidla, ako je fluorid draseln\u00fd, na vysok\u00fa teplotu. Po tejto reakcii sa kremi\u010ditanov\u00e9 pary z tejto reakcie nanes\u00fa na existuj\u00faci kry\u0161t\u00e1l semienka a vytvoria sa nov\u00e9 kry\u0161t\u00e1ly moissanitu.<\/p>\n
Drahokamy vyroben\u00e9 t\u00fdmito technikami maj\u00fa v\u0161etky optick\u00e9 vlastnosti spojen\u00e9 s pr\u00edrodn\u00fdm moissanitom za zlomok jeho ceny, v\u010faka \u010domu s\u00fa ove\u013ea dostupnej\u0161ie ako prav\u00e9 diamanty a s\u00fa vhodn\u00e9 ako kr\u00e1sna, dlhotrvaj\u00faca alternat\u00edva k sl\u00e1vnostn\u00fdm ve\u010dern\u00fdm \u0161at\u00e1m alebo ako v\u00fdrazn\u00fd k\u00fasok k d\u017e\u00ednsom. Ke\u010f h\u013ead\u00e1te kr\u00e1su za prijate\u013en\u00fa cenu, moissanit je neprekonate\u013en\u00fd svoj\u00edm leskom a iskrou - v\u00fdberom jeho lesku a iskry ako \u010fal\u0161ieho v\u00fdrazn\u00e9ho k\u00fasku alebo doplnku na nosenie do pr\u00e1ce neurob\u00edte chybu!<\/p>","protected":false},"excerpt":{"rendered":"
Moissanite, an naturally-occurring form of silicon carbide (SiC), can be found as inclusions in meteorites, corundum deposits and rare kimberlites. Moissanite can also be created artificially using traditional sintering and hot pressing techniques in a laboratory environment. Moissanite gemstones used in jewelry are generally manufactured synthetically in laboratories. Here is how this remarkable gemstone comes […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[64],"tags":[],"class_list":["post-577","post","type-post","status-publish","format-standard","hentry","category-knowledge"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/posts\/577","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/comments?post=577"}],"version-history":[{"count":1,"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/posts\/577\/revisions"}],"predecessor-version":[{"id":578,"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/posts\/577\/revisions\/578"}],"wp:attachment":[{"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/media?parent=577"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/categories?post=577"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ceramicatijolart.com\/sk\/wp-json\/wp\/v2\/tags?post=577"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}