MACRO REFLECT MICRO. “Most minerals occur naturally as crystals. Every crystal has an orderly, internal pattern of atoms, with a distinctive way of locking new atoms into that pattern to repeat it again and again. The shape of the resulting crystal — such as a cube (like salt) or a six-sided form (like a snowflake)-mirrors the internal arrangement of the atoms.”
https://www.geologypage.com/2016/03/how-do-crystals-form-grow.html