Nab\u00edzen\u00fd kus fasetov\u011b brou\u0161en\u00e9ho nefritu poch\u00e1z\u00ed z rusk\u00e9 lokality Ospinskoye ve V\u00fdchodn\u00edch Sajanech na ji\u017en\u00ed Sibi\u0159i. A pr\u00e1v\u011b jeho brus je na tomto kameni mimo\u0159\u00e1dn\u011b zaj\u00edmav\u00fd. Nefrit je toti\u017e zn\u00e1m\u00fd p\u0159edev\u0161\u00edm svou hou\u017eevnatost\u00ed a kr\u00e1sou v hladce le\u0161t\u011bn\u00fdch ploch\u00e1ch, a proto se nej\u010dast\u011bji opracov\u00e1v\u00e1 do kabo\u0161on\u016f, desti\u010dek, ozdobn\u00fdch p\u0159edm\u011bt\u016f nebo so\u0161ek. Fasetov\u00fd brus se pou\u017e\u00edv\u00e1 jen v\u00fdjime\u010dn\u011b \u2013 vy\u017eaduje toti\u017e opravdu kvalitn\u00ed, kompaktn\u00ed a homogenn\u00ed materi\u00e1l. Tento kus proto p\u0159edstavuje pon\u011bkud neobvyklou uk\u00e1zku toho, co lze z kvalitn\u00edho nefritu vytvo\u0159it.<\/p>\n
Ospinsk\u00e9 (Ospinskoye) lo\u017eisko pat\u0159\u00ed mezi nejv\u00fdznamn\u011bj\u0161\u00ed rusk\u00e9 zdroje kvalitn\u00edho zelen\u00e9ho nefritu. Nach\u00e1z\u00ed se v drsn\u00e9 a geologicky velmi zaj\u00edmav\u00e9 oblasti V\u00fdchodn\u00edch Sajan\u016f, v Burjatsku, jihoz\u00e1padn\u011b od Bajkalu. M\u00edstn\u00ed nefrit vznikal b\u011bhem slo\u017eit\u00fdch geologick\u00fdch proces\u016f, p\u0159i nich\u017e byly p\u016fvodn\u00ed ultrabazick\u00e9 horniny hluboko v zemsk\u00e9 k\u016f\u0159e p\u0159em\u011b\u0148ov\u00e1ny p\u016fsoben\u00edm hork\u00fdch fluid a vysok\u00e9ho tlaku. Ospinsk\u00e9 lo\u017eisko je sou\u010d\u00e1st\u00ed Ospinsko-kitojsk\u00e9ho ultramafick\u00e9ho komplexu, kter\u00fd je poz\u016fstatkem d\u00e1vn\u00e9 oce\u00e1nsk\u00e9 k\u016fry.<\/p>\n
Z mineralogick\u00e9ho hlediska nen\u00ed nefrit v prav\u00e9m slova smyslu samostatn\u00fdm miner\u00e1lem, ale velmi jemnozrnnou horninou tvo\u0159enou p\u0159ev\u00e1\u017en\u011b amfiboly ze skupiny tremolitu a aktinolitu. U ospinsk\u00e9ho nefritu v\u00fdrazn\u011b p\u0159eva\u017euje tremolit, jeho\u017e mikroskopick\u00e1 vl\u00e1kna jsou vz\u00e1jemn\u011b propleten\u00e1 a vytv\u00e1\u0159ej\u00ed mimo\u0159\u00e1dn\u011b pevnou strukturu. V men\u0161\u00edm mno\u017estv\u00ed se mohou objevovat tak\u00e9 chromit, chlorit, magnetit a dal\u0161\u00ed miner\u00e1ly.<\/p>\n
Pr\u00e1v\u011b tato unik\u00e1tn\u00ed vl\u00e1knit\u00e1 stavba d\u00e1v\u00e1 nefritu jednu z jeho nejpozoruhodn\u011bj\u0161\u00edch vlastnost\u00ed \u2013 mimo\u0159\u00e1dnou hou\u017eevnatost. Zat\u00edmco v\u011bt\u0161ina krystal\u016f se p\u0159i siln\u00e9m \u00faderu snadno roz\u0161t\u00edpne nebo rozbije, nefrit d\u00edky vz\u00e1jemn\u011b prorostl\u00fdm vl\u00e1kn\u016fm energii \u010d\u00e1ste\u010dn\u011b rozvede celou svou strukturou. Proto pat\u0159\u00ed k nejodoln\u011bj\u0161\u00edm p\u0159\u00edrodn\u00edm materi\u00e1l\u016fm pou\u017e\u00edvan\u00fdm \u010dlov\u011bkem.<\/p>\n
Velikost nab\u00edzen\u00e9ho kusu je 6,9 x 6,9 mm.<\/p>\n","protected":false},"excerpt":{"rendered":"
Nab\u00edzen\u00fd kus fasetov\u011b brou\u0161en\u00e9ho nefritu poch\u00e1z\u00ed z rusk\u00e9 lokality Ospinskoye ve V\u00fdchodn\u00edch Sajanech na ji\u017en\u00ed Sibi\u0159i. A pr\u00e1v\u011b jeho brus je na tomto kameni mimo\u0159\u00e1dn\u011b zaj\u00edmav\u00fd. Nefrit je toti\u017e zn\u00e1m\u00fd p\u0159edev\u0161\u00edm svou hou\u017eevnatost\u00ed a kr\u00e1sou v hladce le\u0161t\u011bn\u00fdch ploch\u00e1ch, a proto se nej\u010dast\u011bji opracov\u00e1v\u00e1 do kabo\u0161on\u016f, desti\u010dek, ozdobn\u00fdch p\u0159edm\u011bt\u016f nebo so\u0161ek. Fasetov\u00fd brus se pou\u017e\u00edv\u00e1 […]<\/p>\n","protected":false},"featured_media":10020,"template":"","meta":{"_acf_changed":false,"inline_featured_image":false},"product_brand":[],"product_cat":[376],"product_tag":[],"class_list":["post-10019","product","type-product","status-publish","has-post-thumbnail","product_cat-nefrit","first","instock","shipping-taxable","purchasable","product-type-simple"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.e-gems.cz\/en\/wp-json\/wp\/v2\/product\/10019","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\/10020"}],"wp:attachment":[{"href":"https:\/\/www.e-gems.cz\/en\/wp-json\/wp\/v2\/media?parent=10019"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.e-gems.cz\/en\/wp-json\/wp\/v2\/product_brand?post=10019"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.e-gems.cz\/en\/wp-json\/wp\/v2\/product_cat?post=10019"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.e-gems.cz\/en\/wp-json\/wp\/v2\/product_tag?post=10019"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}