Dab tsi yog gemstones kho qhov muag phenomena?

Gemstones kho qhov muag phenomena

Gemstones optical phenomena tau los ntawm txoj kev uas sib koom nrog cov txheej txheem crystalline ntawm ib lub pov haum. Qhov kev cuam tshuam lossis kev cuam tshuam no tuaj yeem nyob rau hauv daim ntawv ntawm lub teeb scattering, reflection, refraction, diffraction, absorption lossis kis tau tus mob.

Adularesence

Adularescence yog qhov tshwm sim xiav sheen uas muaj kev cuam tshuam rau lub nyooj cabochon nto ntawm Moonstone. Qhov tshwm sim ntawm shimmer los ntawm kev sib cuam tshuam ntawm lub teeb nrog txheej ntawm me "albite" muaju hauv cov hnub ci. Lub txheej tuab ntawm cov pob zeb me me no txiav txim siab qhov zoo ntawm xiav shimmer. Thinner lub txheej, zoo dua lub xiav nyem. Qhov no feem ntau tshwm los ua kab teeb ci ntsuab. Moonstone yog orthoclase feldspars, lwm lub npe yog “selenite”. Loos hu nws ua Astrion.

Asterism

Gem cutters feem ntau xaiv txiav kab cabochon, thaum pob zeb tsis tshua zoo. Nyob rau hauv xws li gems thiab lub pob zeb thaum lub teeb ntog rau ntawm qhov cabochon nto thiab ua kom zoo li lub hnub qub, qhov tshwm sim yog hu ua asterism. Muaj 4 txoj kab thiab 6 txoj kev hnub qub tau pom txhua zaus. Qhov no tshwm sim thaum tus qauv ntawm rab koob xws li cov thawv ntim cov thawv los yog lo lo ntxhuav hauv qhov siv lead ua los ntawm ntau tshaj ib qho.

Chatoyancy

Los ntawm lub npe Fabkis txoj “Sib tham” txhais tau tias miv. Chatoyancy hais txog qhov tshwm sim zoo li kev qhib thiab kaw ntawm miv lub qhov muag. Peb tuaj yeem soj ntsuam nyob hauv chrysoberyl miv lub qhov muag lub pov haum nrog kev pom tseeb zoo. Lub pov haum lub qhov muag lub pob zeb muaj ib tus ntse ntse, qee zaum ob lossis peb pawg sib tw, khiav thoob plaws cov pob zeb av nto. Miv lub pov haum lub pov haum hauv cabochon cov duab raug txiav ua kom sib haum. Qhov ncaj ncaj ntawm cov qauv siv lead ua ntawm lub pob zeb yog txiav mus rau cov xwm txheej. Yog li thaum pom lub teeb ntog rau ntawm nws, cov ntsej muag ntse tuaj yeem pom. Hauv cov xwm txheej zoo tshaj plaws, cov chrysoberyl miv sib tham qhov sib cais tau cais cov nplaim ua ob thooj. Peb tuaj yeem pom mis nyuj thiab zib ntab nyhuv thaum lub pob zeb txav hauv qab lub teeb.

Iridescence

Iridescence no kuj yog hu ua goniochromism, tshwm sim qhov chaw ntawm qhov khoom ntawm cov khoom siv ntau yam xim raws li lub kaum sab xis pom qhov kev hloov. Nws muaj peev xwm pom tau yooj yim nyob rau hauv lub caj dab ntawm ib tug nquab, xab npum npuag, tis ntawm npauj npaim, niam pear thiab lwm yam. Qhov chaw tsis sib xws ntawm qhov chaw dav thiab ntim ntau qhov chaw cia lub teeb kom pom thiab rov qab los ntawm ntau qhov chaw (diffraction) ua rau ntau lub xim pom kev nyhav. Nrog rau kev cuam tshuam, qhov tshwm sim yog qhov ua. Ntuj pearls tso iridescence uas txawv heev ntawm nws lub cev xim. Tahitian pearls tso saib yawm suab.

Ua si xim

Lub pov haum zoo kawg hu ua opal qhia txog cov xim zoo nkauj. Cov hluav taws opals los ntawm Lightening Ridge, Australia (qhia kev hloov pauv ntawm luminous spectral xim tiv thaiv dub) muaj npe nrov rau qhov tshwm sim no. Thaum lub sijhawm ua si ntawm cov xim no yog hom kev tsis ncaj ncees, yuav luag txhua tus tswv lag luam gemstone hu nws wrongly "hluav taws". Hluav taws kub yog lub sij hawm gemological, Nws yog lub dispersion ntawm lub teeb muaj kev cuam tshuam hauv gemstones. Nws muaj feem ntau pom hauv pob zeb diamond. Nws yog qhov yooj yim dispersion ntawm lub teeb. Nyob rau hauv rooj plaub ntawm opals nws tsis yog dispersion thiab chaw pib, nws yog blond siv lo lus "hluav taws".

Xim hloov

Qhov piv txwv zoo tshaj plaws ntawm kev hloov xim yog alexandrite. Cov no gems thiab pob zeb tshwm sim sib txawv heev nyob rau hauv incandescent lub teeb piv rau ntuj hnub lub teeb. Qhov no yog lom zem ntau vim tias cov gems muaj pes tsawg leeg tshuaj raws li muaj zog hauv kev xaiv. Lub alexandrite zoo nkaus li ntsuab nyob rau hauv nruab hnub nrig thiab kuj tshwm liab hauv pom kev tsaus. Sapphire, kuj yog tourmaline, alexandrite thiab lwm lub pob zeb tuaj yeem tsis pom zoo muaj kev hloov xim.

Labradorescence

Labradorescence yog ib hom kev yoog, tab sis yog qhov tseem ceeb heev vim kev sib tw siv sib tw. Peb tuaj yeem nrhiav nws hauv labradorite gemstone.

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