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Ukugaya Ubuhlalu Bengilazi
Ubuhlalu bengilazi ephansi, ukubukeka: indilinga ekhanyayo engenambala, ebushelelezi futhi iyindilinga, ngaphandle kwamabhamuza asobala noma ukungcola.
Isilinganiso sokujikeleza: isilinganiso sokujikeleza ≥ 80%;
Ukuminyana: 2.4-2.6g/cm3;
Inkomba ye-Refractive: Nd ≥ 1.50;
Ukwakheka: ingilazi ye-sodium calcium, okuqukethwe kwe-SiO2 ＞ 68%;
Amandla acindezelayo: > 1200n;
Ubulukhuni be-Mohs: 6-7.
