Ziehst du dich an?
// "sich anziehen" Konjugation:
Ich ziehe mich an
Du ziehst dich an
Er/sie/es zieht sich an
Wir ziehen uns an
Ihr zieht euch an
sie/Sie ziehen sich an
Ein basically = 1 (one), but unlike the way it goes in Deutschland number system. Here, one = eins. now, in case of demons nouns, eine is used. And in case of masculine or neuter nouns, ein is used.
This is in the wrong section, but each mineral are different because they are made up of atoms and atoms are different from each other. Their differences come from the variability of atoms.
No atom is alike one another because they have different numbers (protons). Hydrogen is 1, Helium is 2, etc. etc. you get it. Every atom has a different chemical composition, therefore altering a mineral's physical appearance, and other characteristics.