Txhawm rau yuav cov hniav nyiaj hniav kub uas tsim nyog, cov neeg siv khoom yuav tsum nkag siab txog pob zeb diamond los ntawm kev pom zoo. Txoj hauv kev ua qhov no yog kom paub txog 4C, tus qauv thoob ntiaj teb rau kev ntsuas pob zeb diamond. Plaub Cs yog Nyhav, Xim Qib, Qib Clarity, thiab Qib Txiav.
1. Carat Nyhav
Pob zeb diamond hnyav yog xam nyob rau hauv carats, los yog feem ntau hu ua "phaib", 1 carat yog sib npaug rau 100 ntsiab lus, 0.5 carat pob zeb diamond, tuaj yeem sau ua 50 ntsiab lus. Ib calorie yog sib npaug rau 0.2 grams, uas txhais tau hais tias ib gram yog sib npaug rau 5 calories. Qhov loj dua lub pob zeb diamond, qhov tsawg nws yuav tsum yog. Rau thawj zaug cov neeg yuav khoom pob zeb diamond, sim pib los ntawm kev xaiv qhov loj ntawm pob zeb diamond. Txawm li cas los xij, txawm tias ob lub pob zeb diamond ntawm tib lub carat qhov hnyav tuaj yeem sib txawv ntawm tus nqi vim muaj xim sib txawv, pom tseeb thiab txiav, yog li muaj lwm yam uas yuav tsum tau xav txog thaum yuav pob zeb diamond.
2. Xim Qib
Ntau dua nyob rau hauv kev ua lag luam yog Cape series pob zeb diamond, uas tuaj yeem faib ua "xim pob tshab" mus rau "ze li tsis muaj xim" thiab "lub teeb daj". Cov xim qib yog txiav txim siab raws li GB / T 16554-2017 tus qauv "Diamond Grading", pib ntawm "D" xim rau "Z". Xim yog D, E, F, tseem hu ua pob tshab tsis muaj xim, yog qhov tsis tshua muaj, qhov sib txawv ntawm lawv tso siab rau cov kws tshaj lij kom ua tib zoo txheeb xyuas. Cov xim ntau dua yog G rau L, tseem hu ua ze li tsis muaj xim. Cov kws tshaj lij yuav paub qhov txawv yooj yim dua, tab sis tus neeg nruab nrab yog qhov nyuaj rau kev paub qhov txawv, yog tias teeb tsa hauv cov hniav nyiaj hniav kub yog qhov nyuaj dua los kuaj xyuas. Cov xim yog qis dua M, tseem hu ua lub teeb daj, tus neeg nruab nrab tuaj yeem paub qhov txawv, tab sis tus nqi yog pom tseeb ntau pheej yig dua. Qhov tseeb, pob zeb diamond muaj lwm yam xim, hu ua pob zeb diamond xim, nws tuaj yeem yog daj, liab dawb, xiav, ntsuab, liab, dub, kaleidoscope, tab sis tsawg heev, tus nqi siab heev.
3. Qhov tseeb
Txhua lub pob zeb diamond yog qhov tshwj xeeb thiab muaj cov kev sib koom ua ke, ib yam li lub cim yug, thiab tus naj npawb, qhov loj me, cov duab thiab xim ntawm cov kev suav no txiav txim siab lub pob zeb diamond qhov pom tseeb thiab tsis sib xws. Qhov tseeb, feem ntau cov pob zeb diamond suav nrog tsis tshua pom ntawm qhov muag liab qab. Qhov tsawg dua qhov suav nrog hauv pob zeb diamond, qhov ntau lub teeb yog refracted, thiab pob zeb diamond yog ob npaug ci. Raws li Tuam Tshoj tus "pob zeb diamond grading" tus qauv, qhov tseeb ntawm kev txheeb xyuas yuav tsum tau ua nyob rau hauv 10 lub sij hawm magnification, thiab nws cov qib yog raws li nram no:
LC yog qhov yooj yim flawless
Cov nta me me sab hauv thiab sab nraud ntawm VVS (cov kws tshaj lij yuav tsum ua tib zoo saib kom pom lawv)
VS me ntsis sab hauv thiab sab nraud nta (nyuaj rau cov kws tshaj lij nrhiav)
SI micro sab hauv thiab sab nraud nta (yooj yim rau cov kws tshaj lij nrhiav)
P muaj cov yam ntxwv sab hauv thiab sab nraud (pom qhov muag liab qab)
Pob zeb diamond saum VVS tsis tshua muaj. Cov ntsiab lus ntawm VS lossis SI kuj tsis pom qhov muag liab qab, tab sis tus nqi pheej yig dua, thiab ntau tus neeg yuav. Raws li rau P-chav kawm, tus nqi yog qhov tsawg dua, thiab yog tias nws ci txaus thiab ci txaus, nws kuj tuaj yeem yuav.
Plaub, Hlais
Txiav sawv cev rau ntau yam, ntxiv rau cov duab, nrog rau lub kaum sab xis, kev faib ua feem, symmetry, sib tsoo thiab lwm yam. Thaum lub pob zeb diamond txiav kev faib ua feem yog tsim nyog, lub teeb yog zoo li daim iav reflection, tom qab lub refraction ntawm txawv facets, condensed nyob rau hauv sab saum toj ntawm lub pob zeb diamond, emitting ib tug dazzling ci ntsa iab. Lub pob zeb diamond txiav tob dhau los yog ntiav dhau yuav ua rau lub teeb ntws tawm hauv qab thiab poob nws cov luster. Yog li ntawd, zoo-txiav diamonds ib txwm muaj tus nqi siab dua.
Post lub sij hawm: Sep-22-2023