Encyclopedia

Natural Corundum


Natural corundum also consists mainly of aluminum oxide, but unlike emery, it is often present in rock in the form of more or less fine grains. Ground or crushed corundum mainly consists of small white grains with rare inclusion of black or yellow particles. Natural corundum is included in this tariff item even if it has been thermally treated

Source: "Explanations to the Customs Tariff of the Russian Federation (HSN RF)" (prepared by the Russian Federal Customs Service) (volume 1, sections I - VI, groups 1 - 29)

Морфология

Род

Понятие «природный корунд» мужского рода.

Склонение и число

Падеж Единственное число Множественное число
Р природного корунда природных корундов
Д природному корунду природным корундам
В природный корунд природные корунды
Т природным корундом природными корундами
П природном корунде природных корундах
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