Single crystal corundum e na le maqheka a mangata, boima bo phahameng, boleng bo phahameng, matla a ho sila, mocheso o fokolang, bophelo bo bolelele ba ho itšeha, 'me e khona ho sebetsana le tšepe e thata le e thata, joalo ka tšepe e sa hloekang, vanadium e phahameng, joalo-joalo.
Nako ea poso: Feb-22-2023