E jiri ya tụnyere corundum aja aja na corundum ọcha, otu corundum kristal nwere isi ike dị elu, ike siri ike, otu akụkụ kristal okirikiri, yana nguzogide siri ike na nkewa.
Agba nke otu kristal corundum bụ ìhè edo edo, na ụdị ngwaahịa bụ kristal hexagonal
Oge nzipu: Eprel-28-2023