Thaum nriav cov hniav nyiaj hniav kub pob zeb diamond lossis rimless pob zeb diamond, ntau tus neeg tau ntsib nrog qhov teeb meem ntawm kev ntsuam xyuas kom paub tseeb gemstones. Yog tsis muaj kev kawm tshwj xeeb, nws tsis yooj yim to taub cov lus thiab cov qauv tsim uas tus neeg muag khoom muab los piav qhia txog cov yam ntxwv ntawm lub pob zeb diamond. Yog li ntawd, nws tseem ceeb heev uas yuav tsum khaws cov tsawg ntawm qhov kev paub ntawm pob zeb diamond zoo qauv ua ntej kev yuav khoom. Qhov no yuav pab koj tswj hwm koj cov nyiaj tau zoo.
Cov Lus Qhia
Kauj ruam 1
Cov pob zeb tsis tshua muaj muag hauv khw muag khoom yog ib txwm muab nrog daim ntawv pov thawj ntawm kev ua kom tiav los ntawm lub chaw pov thawj. Rau txhua lub pob zeb diamond hniav, cov chaw tsim khoom kuj suav nrog ib daim ntawv uas muaj cov ntaub ntawv ntawm cov yam ntxwv tseem ceeb ntawm gemstones. Cov peev txheej no tuaj yeem ntseeg tau, txij li qhov zoo ntawm pob zeb diamond tau soj ntsuam los ntawm cov kws paub siv cov cuab yeej tshiab tshaj plaws. Nws yog qhov txaus rau cov neeg yuav khoom yooj yim kom nkag siab qhov no lossis lub cim ntawv alphanumeric txhais tau li cas. Tom qab ntawd koj tuaj yeem kawm paub ntsuas ntsuas tus kheej lub pob koj tus kheej.
Kauj ruam 2
Cov yam ntxwv ntawm pob zeb diamond thiab polished pob zeb ua raws "4C Txoj Cai": carat nyhav (hnyav hauv carats); xim (xim); kev pom tseeb txiav (cov duab thiab zoo ntawm kev txiav). Raws li txoj cai, ntawm cov cim npe ntawm cov pob zeb diamond koj tuaj yeem nrhiav cov ntaub ntawv ntawm hom nram qab no: 1 Br Kr-57 0, 08 2 / 3A. Qhov no txhais tau tias daim no muaj cov khoom sib dhos 1 puag ncig nrog 57 ntsej muag. Qhov hnyav ntawm lub pov haum yog 0.08 ct. Naj npawb 2 sawv cev tus cwj pwm xim, thiab tus naj npawb 3 kom pom tseeb. Tus ntawv cim A txhais tau tias yog txiav qhov zoo.
Kauj ruam 3
Yog li, thaum koj pib kawm cov yam ntxwv ntawm lub pob zeb diamond, ua ntej ntawm txhua yam, them sai sai rau nws cov carat qhov hnyav. 1 carat (ct) sib npaug rau 200 mg lossis 0.2 g. Txhua lub pob zeb diamond feem ntau muab faib ua qhov me me (nce txog 0.29 ct), nruab nrab (0.30 - 0.99 ct), loj (tshaj 1 ct). Muaj qhov sib txheeb ntawm qhov loj ntawm lub pob zeb diamond thiab nws txoj kab uas hla. Piv txwv li, lub pob zeb hnyav 0, 50 ct, nrog rau kev soj ntsuam zoo tshaj plaws ntawm cov txheej txheem kev qhia rau kev txiav pob zeb diamond, yuav muaj qhov ntev 5, 2 hli. Raws li, qhov hnyav dua ntawm pob zeb diamond, qhov loj dua nws txoj kab uas hla thiab cov nqi.
Kauj ruam 4
Raws li cov nplai domestic rau kev ntsuas xim, txhua lub pob zeb diamond tau muab tus nqi ntawm 1 (tsis muaj xim) txog 9 (xim av). Rau kev txiav cov khoom hnyav uas muaj qhov hnyav txog 0.29 ct, cov xim ntau yog qhov txawv ntawm 1 mus rau 7. Lub tebchaw thoob ntiaj teb GIA (Lub Tebchaws Gemological Institute of America) txhais cov xim gradations nrog cov tsiaj ntawv los ntawm D mus Z. Qhov tseem ceeb tshaj plaws yog xim tsis muaj xim lossis tint me ntsis. pob zeb diamond, los ntawm kwv yees li 1 txog 5 xim pawg (D, E, F, G, H hauv GIA system). Pheej yig txiav cov pob zeb diamond nrog cov xim ntawm 5-7 (txog 0.29 ct) lossis 8-9 pawg xim (K-Z raws li GIA).
Kauj ruam 5
Qhov pom tseeb ntawm lub pob zeb diamond yog lwm qhov taw qhia tseem ceeb uas cuam tshuam loj heev rau nws tus nqi. Pob zeb diamond, zoo li lwm yam pob zeb hauv av, yog tus cwj pwm tsim lub ntuj tsim. Kev txiav txim siab lawv cov yam ntxwv, qhov ntau, qhov loj me thiab qhov chaw nyob, tus kws tshaj lij tau cog lus meej pawg rau txhua pob zeb diamond. Hauv qhov kev faib tawm hauv tsev, kev pom meej ntawm lub pob zeb diamond yog qhia los ntawm tus xov tooj ntawm 1 txog 12. Ntxiv mus, 1 yog lub pob zeb ntshiab hauv qab lub khob loj dua; 9-12 - pob zeb diamond nrog kev suav nrog pom kom pom lub ntsej muag liab qab. Rau pob zeb diamond nce txog 0.29 ct, cov ntsuas zoo sib xws muaj qhov ntau ntawm 1 txog 9. Raws li GIA system, pob zeb diamond nrog cov pab pawg siab tshaj plaws yog tsim los ntawm cov ntawv IF, tom qab ntawd kev txiav ntawm hom VVS1, VVS2, VS1, VS2, SI1-SI3, I1-I3. Pab pawg neeg dawb huv I3 sib raug rau pab pawg 11-12 hauv kev suav Lav Xias.
Kauj Ruam 6
Thaum kawg, kawm cov ntaub ntawv ntawm cov duab thiab zoo ntawm kev txiav. Qhov nrov tshaj plaws thiab kim tshaj yog tus qauv puag ncig ntawm pob zeb diamond Kr-57. Kuj tseem muaj ntau cov duab zoo nkauj: pear (G-56), marquis (M-55), oval (Ov-57), tus ntxhais huab tais (P-65), baguette (B-33), trilliant (T-55), thiab lwm yam.-Lub ntsej muag tawv pob zeb zoo li stylish thiab zoo hauv cov hniav nyiaj hniav kub.
Kauj Ruam 7
Qhov kev txiav tawm zoo hauv kev tso npe Lav Xias yog tsim los ntawm cov tsiaj ntawv A, B, C, D, qhov twg A yog qhov zoo tshaj plaws, D yog qhov tsis zoo. Txiav kev ua tau zoo txhais tau tias qhov sib piv ntawm txoj kab ntev thiab cov ces kaum ntawm qhov tsis nyiam ntawm cov npoo, polish thiab kab ntsuas. Kev ci ntsa iab thiab kev ua si ntawm lub teeb nyob hauv lub pob zeb nyob ntawm tag nrho cov kev ntsuas no. Hauv GIA system, qhov zoo tshaj plaws ntawm lub pob zeb diamond yog denoted los ntawm lo lus zoo heev, tom qab ntawd los ntawm cov gradations zoo li zoo heev, zoo, qhov tsis zoo yog qhov tsis zoo.
