
Crystal Systems Explained: Why Shapes Like Cubic, Hexagonal & Trigonal Matter
Crystals don’t just grow in random shapes—their forms follow strict rules of symmetry called crystal systems. From halite cubes to quartz prisms, every mineral’s outward appearance reflects its atomic architecture. There are seven recognized crystal systems—cubic, tetragonal, hexagonal, trigonal, orthorhombic, monoclinic, and triclinic—each defined by the lengths and angles of









