Ka whakatauritea ki te corundum parauri me te corundum ma, he nui te pakeke o te corundum karaihe kotahi, he uaua, he matūriki kotahi te ahua o te karaihe porowhita, me te kaha o te aukati ki te wehenga.
Ko te tae o te corundum tioata kotahi he kowhai marama, ko te momo hua he karaihe hexagonal
Te wa tuku: Apr-28-2023