Iidayimani bezisoloko zithandwa ngabantu abaninzi, abantu badla ngokuthenga iidayimani njengezipho zeeholide bona okanye abanye, kunye neziphakamiso zomtshato, njl., kodwa kukho iintlobo ezininzi zedayimani, ixabiso alifani, ngaphambi kokuthenga idayimani. , kufuneka uqonde iintlobo zedayimani.
Okokuqala, ngokusekwa kolwahlulo
1. Iidayimani ezenziwe ngokwemvelo
Iidayimani ezibiza kakhulu kwimarike ngokubanzi zenziwe ngecrystallization ekuhambeni kwexesha kwindawo enobushushu obuphezulu kakhulu kunye noxinzelelo (ngokuqhelekileyo ukungabikho kweoksijini), kwaye iidayimani ezindala zifunyenwe zineminyaka eyi-4.5 yezigidigidi ubudala.Olu hlobo lwedayimani lunexabiso eliphezulu kuba lunqabile.
2. Iidayimani ezenziweyo
Ngophuhliso lwenzululwazi kunye nobuchwepheshe, kukho iidayimani ezininzi ezenziweyo kwimarike, kwaye abantu abaninzi banokwenza iidayimani zokulinganisa ngeglasi, i-spinel, i-zircon, i-strontium titanate kunye nezinye izinto, kwaye ixabiso ledayimani ezinjalo ngokubanzi liphantsi.Kodwa kubalulekile ukuqaphela ukuba ezinye iidayimani zokwenziwa zikhangeleka ngcono kunedayimani ezenziwe ngokwendalo.
Okwesibini, ngokwebakala ledayimani 4C
1. Ubunzima
Ngokobunzima bedayimani, okukhona ubunzima bedayimani, kokukhona ixabiseke ngakumbi idayimani.Iyunithi esetyenziselwa ukulinganisa ubunzima bedayimani yikharati (ct), kunye nekharati enye ilingana neegram ezimbini.Into esiyibiza ngokuba ngamanqaku ali-10 kunye namanqaku angama-30 kukuba i-carat e-1 yahlulwe yangamacandelo angama-100, nganye inqaku elinye, oko kukuthi, amanqaku ali-10 yi-0.1 carats, amanqaku angama-30 yi-0.3 carats, njalo njalo.
2. Umbala
Iidayimani zahlulwe ngombala, nto leyo ibhekisa kubunzulu bombala kunodidi lombala ongezantsi.Ngokobunzulu bombala wedayimani ukumisela uhlobo lwedayimani, ngokusondeleyo idayimani ayinambala, iqokelele ngakumbi.Ukusuka kwiidayimani zodidi luka-D ukuya kwidayimani yebakala lika-Z ziya zisiba mnyama kwaye zibemnyama, iDF ayinambala, iGJ iphantse ingabinambala, kunye nedayimani yebakala lika-K ziphulukana nexabiso lazo elinokuqokeleleka.
3. Ukucaca
Iidayimani zahlulwe ngokucaca, nto leyo ethetha indlela ecoceke ngayo idayimani.Ukucoceka kwedayimani kunokubonwa phantsi kwe-microscope ephindwe kashumi, kwaye ngakumbi okanye ngokucacileyo iziphene, imikrwelo, njl., ixabiso eliphantsi, kwaye ngokuphambene noko.Ngokutsho kokucaca kwedayimani ezinkulu zihlulwe zibe ziindidi ezi-6, ngokulandelanayo FL, IF, VVS, VS, S, I.
4. Sika
Ukwahlula idayimani ukusuka ekusikeni, ngcono ukusika, ngakumbi idayimani ingabonakalisa ukukhanya ukufezekisa umlinganiselo ogqibeleleyo.Iimilo zokusika zedayimani zixhaphake kakhulu yintliziyo, isikwere, i-oval, irawndi kunye nomqamelo.Kule meko, iidayimani zohlulwe zibe ziindidi ezintlanu: EX, VG, G, FAIR kunye nePOOR.
Okwesithathu, ngokwecandelo lombala wedayimani
1, Idayimani engenambala
iidayimani ezingenambala zibhekiselele kuhlobo olungenambala, oluphantse lungabinambala okanye luthi thsuphe lwedayimani ekhanyayo etyheli, kunye nokuhlelwa kweedayimani ezingenambala kukhankanywe ngasentla ngokuhambelana nobunzulu bombala ukwahlulahlula.
2. Iidayimani ezinemibala
Isizathu sokubunjwa kwedayimani ezinemibala kukuba utshintsho olufihlakeleyo ngaphakathi kwedayimani lukhokelela kumbala wedayimani, kwaye ngokombala wedayimani owahlukileyo, idayimani yahlulwe ibe ziindidi ezintlanu.Ngokwexabiso, lihlulwe kwiidayimani ezibomvu, iidayimani eziluhlaza, iidayimani eziluhlaza, iidayimani eziphuzi kunye nedayimani ezimnyama (ngaphandle kweedayimane ezikhethekileyo).
Ixesha lokuposa: May-16-2024