Miv lub qhov muag opal

miv lub qhov muag opal

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Miv lub qhov muag opal

Tus miv lub qhov muag opal yog ib qho kev txwv nrog cov miv qhov muag ntxig rau saum toj ntawm lub pob zeb thaum nws raug txiav ua ib hom kab cabochon.

Opal

Opal yog ib daim phais ntawm cov tho tawm ntawm cov kua dej. Cov dej cov ntsiab lus muaj ntawm 3 rau 21% los ntawm qhov hnyav. Tab sis feem ntau yog 6 thiab 10%. Vim nws txoj kev xav tsis zoo, nws yog ib qho chaw ua cov mineraloid. Tsis zoo li cov ntaub ntawv ntawm silicone crystalline, lawv yog cov zaub mov ua cov zaub mov. Nws yog tso rau ntawm qhov ntsuas kub tsawg dua. Thiab nws yuav tshwm sim hauv cov fissures ntawm yuav luag txhua yam pob zeb. Tau feem ntau pom muaj limonite, thiab sandstone, rhyolite, marl, thiab basalt.

Nyob ntawm cov kev mob uas nws tsim, opal tej zaum yuav tau pob tshab, kuj yog ib qho kev sib tw los yog tsis sib thooj. Thiab cov xim tom qab tuaj yeem yog dawb, lossis dub los yog ze li ntawm cov xim ntawm qhov muag pom. Dub opal yog xav tias yog rarest. Whereas dawb, tseem grey thiab ntsuab yog cov feem ntau.

Miv lub qhov muag

Nyob rau hauv lub pov haum, chatoyancy, chatoyance los yog miv lub qhov muag ntxim nyiam, yog ib qho kev cuam tshuam qhov pom ntawm pom muaj nyob rau hauv tej lub gemstones. Coined los ntawm Fabkis "oeil de chat", lub ntsiab lus "miv lub qhov muag", kev sib tham ua ke los ntawm qhov fibrous qauv ntawm cov khoom, xws li hauv miv lub qhov muag tourmaline, los ntawm fibrous inclusions los yog kab noj hniav nyob hauv lub pob zeb, xws li nyob hauv miv lub qhov muag chrysoberyl. Lub precipitates uas ua rau sib tham hauv chrysoberyl yog cov pob zeb hauv av rutile, muaj li feem ntau ntawm titanium dioxide. Cov ntaub ntawv kuaj pom tau tsis muaj pov thawj ntawm cov hlab ntsha los yog cov fibers.The koob precipitates txhua align perpendicularly txoj cai rau miv lub qhov muag nyhuv. Lub lattice parameter ntawm koob yuav ntais tsuas yog ib qho ntawm peb txoj kab orthorhombic siv lead ua ntawm cov chrysoberyl, los ntawm kev sib haum xeeb raws li qhov kev taw qhia.

Cov phenomenon zoo li lub brilliance ntawm ib cov lus silk. Qhov luminous streak ntawm reflected teeb yog ib txwm perpendicular mus rau kev coj ntawm lub fibers. Rau lub gemstone los qhia cov nyhuv no zoo tshaj plaws nws yuav tsum muab hla tus cabochon, sib npaug nrog ib lub tiaj tiaj tiaj uas tsis sib txuas, nrog lub fibers los yog fibrous cov txheej txheem parallel mus rau lub hauv paus ntawm lub tiav pob zeb. Qhov zoo tshaj plaws tiav cov nrom qhia tau hais tias ib qho kev sib txuas ntawm ib lub teeb ntawm lub teeb uas txav mus hla lub pob zeb thaum nws tig. Tshawb nrhiav lub pob zeb ntawm cov khoom qis me dua hauv cov khoom zoo li muaj qhov ntsej muag nrog cov xim daj ntseg. Faceted pob zeb tsis qhia cov nyhuv zoo.

Miv lub qhov muag opal

yuav natural gemstones hauv peb lub khw

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kev ua yuam kev: Cov ntsiab lus yog kev tiv thaiv !!