Uma kuqhathaniswa ne-brown corundum ne-corundum emhlophe, i-crystal corundum eyodwa inobunzima obuphezulu, ukuqina, ukuma kwekristalu eyindilinga eyodwa, kanye nokumelana okuqinile nokuhlukana.
Umbala we-crystal corundum eyodwa uphuzi ngokukhanyayo, futhi uhlobo lomkhiqizo luyikristalu ene-hexagonal
Isikhathi sokuthumela: Apr-28-2023