There are 14 types of three-dimensional lattices are present in crystals. These types are known as Bravais lattice. These lattices are named after the French physicist Auguste Bravais.
Bravais Lattice indicates the 14 different 3-dimensional arrangements into which atoms can be arranged in crystals. The smallest group of symmetrically arranged atoms that can be repeated in an array to make up the entire crystal is called a unit cell. The most fundamental classification is known as the Bravais lattice. In other words, a Bravais lattice is an array of discrete points with an arrangement and orientation that look exactly the same from any of the discrete points, that is the lattice points are indistinguishable from one another.