ʻO ka corundum kristal hoʻokahi ka maikaʻi o ka ʻoki ʻana i nā ʻaoʻao he nui, ʻoi aku ka paʻakikī, ka waiwai o ka paʻakikī, ka ikaika wili ikaika, ka wela haʻahaʻa haʻahaʻa, ke ola ʻoki abrasive lōʻihi, a hiki ke hana i ke kila paʻakikī, e like me ke kila kila, ke kila kiʻekiʻe vanadium kiʻekiʻe. etc. He mea pono loa ia...
Heluhelu hou aku