Opal pob zeb tau paub rau noob neej ntev heev, keeb kwm ntawm lawv siv rov qab ntau txhiab xyoo. Nws ntseeg hais tias nws lub npe los ntawm Sanskrit "upala", uas txhais tau tias "noble pob zeb". Tsis muaj qhov tsis sib haum xeeb rau nws, lawv cov yam ntxwv ci ntsa iab, nrog rau cov xim palette dav, tsuas yog mesmerizing.
Zoo li ntau lub pob zeb zoo nkauj, opal tsis yog ib txwm nyiam. Lub sijhawm sib txawv, ntau yam khoom raug ntaus nqi rau nws, los ntawm qhov phem mus rau qhov zoo. Piv txwv li, hauv Rome thaum ub, nws yog lub cim ntawm kev ncaj ncees, suav hais tias yog lub hauv paus ntawm lub zog thiab lub zog, Emperor Constantine txawm tshaj tawm cov lus xaiv tias pob zeb opal tuaj yeem ua rau lawv cov tswv pom tsis tau rau lwm tus. Txij thaum ntawd los, lawv tau ua neeg phem thiab dhau los ua tub sab tub sab.
Txawm li cas los xij, thaum kawg ntawm lub xyoo pua 19th, ib qho kev tso nyiaj loj tau pom nyob rau hauv Australia, thiab zam rau opals rov qab los. Tib neeg tsuas tuaj yeem tiv tsis tau nws txoj kev ci ntsa iab thiab kev zoo nkauj. Muaj tseeb, tsis yog txhua tus ntawm lawv zoo nkauj heev. Thiab, los ntawm txoj kev, nws yog opal uas tom qab tau los ua lub cim ntawm South Australia, nws yog nyob rau ntawd hais txog 90% ntawm lub pov haum uas yog cov pab pawg neeg no tseem mined.
Nyob ntawm qhov muaj pes tsawg leeg, ci ntsa iab, purity thiab lwm yam ntxwv, ntau hom pob zeb no txawv. Qhov tseem ceeb tshaj plaws yog lub npe hu ua noble opal, nws twb belongs rau precious pob zeb, tsis yog semi-precious pob zeb. Qhov tsawg tshaj plaws yog zoo tib yam opal, nws tsis muaj ib tug zoo nkauj iridescent sheen. Nyob rau hauv dav dav, nws yog ntau ntau nondescript piv rau nws noble counterpart. Raws li cov xim, muaj ob pawg loj: dawb opal - ib lub pob zeb ntawm txhua lub teeb ntxoov ntxoo, thiab dub - ib qho tsaus nti lossis ntau xim ib qho.
Cov pob zeb no muaj cov khoom nthuav. Ua ntej tshaj plaws, lawv muaj cov dej me me, yog li lawv xav tau kev saib xyuas tshwj xeeb. Txhua opal muaj microcracks ntawm nws qhov chaw uas nws tuaj yeem nqus dej noo. Ntawm qhov tod tes, nws yog los ntawm lawv tias nws evaporates, thaum lub opal maj mam ploj mus thiab poob nws cov ci zoo nkauj. Yog li ntawd, txhawm rau ncua qhov teeb meem no kom lig li sai tau, koj yuav tsum hnav cov hniav nyiaj hniav kub nrog opal ntau zaus, thiab khaws cia rau hauv cov ntaub pua plag ntub. Opals yuav tsum tau ceev kom tsis txhob muaj kab mob, vim qhov no tuaj yeem cuam tshuam rau lawv cov xim. Feem ntau, cov tswv yuav tsum tau ua tib zoo saib xyuas lawv.
Nws yog ntawm qhov piv txwv ntawm lub pov haum no uas koj tuaj yeem pom zoo li qhov tshwm sim zoo li opalescence - kev ua si ntawm lub teeb, uas tseem muaj nyob hauv pob zeb diamond. Tus nqi ntawm opals yog tseeb nyob rau hauv ntau npaum li cas xim tuaj yeem pom ntawm nws qhov chaw, qhov kim tshaj plaws muaj plaub ntawm lawv. Yog li lawv thiaj nyab xeeb
ua kom muaj nuj nqis.
Opal pob zeb tsis yog qhov nyuaj tshwj xeeb, ntawm Mohs nplai lawv nyob ntawm thaj tsam 5, 5-6, 5. Gemstones ntawm ntau yam muaj koob muaj npe feem ntau zoo li tus ca caochons, nws yog nyob rau hauv daim ntawv no uas lawv muaj siab tshaj plaws. qhia lawv cov ci ntsa iab thiab xim.
Nws ntseeg tias opals coj kev thaj yeeb nyab xeeb thiab kev sib haum xeeb rau lawv cov tswv. Nws yog lub pob zeb no uas tuaj yeem pab tshem tawm kev nyuaj siab, npau taws thiab kev xav tsis zoo. Nws tsis muaj teeb meem yog tias cov tswv ntawm cov hniav nyiaj hniav kub ntseeg tias opals muaj cov khoom zoo sib xws. Txawm lawv tsis ua lawv tus mascots los yeej tseem zoo nkauj heev.
