A crystal lattice is a three-dimensional arrangement of atoms, ions, or molecules in a repeating pattern. This structure is fundamental to the properties of crystalline solids, such as metals, salts, and minerals. The specific arrangement of particles within the lattice determines the material's characteristics, including its strength, melting point, and conductivity. In a crystal lattice, each point represents a position occupied by a particle, and the overall structure can be described using various geometric shapes, such as cubes or hexagons. Common types of crystal lattices include cubic, hexagonal, and tetragonal, each influencing how the material interacts with light and heat.