What is cryst?

als:

Crystals are solid materials that have a regular, repeating arrangement of atoms, molecules, or ions in a three-dimensional pattern called a crystal lattice. Most crystals are formed through a process of nucleation, growth, and self-assembly. Crystals can form in a wide range of shapes and sizes, from microscopic to giant, and can be found in nature (e.g. gemstones, snowflakes) or synthesized in laboratories for various applications (e.g. semiconductors, pharmaceuticals). Crystals have unique optical, electrical, mechanical, and thermal properties that make them useful in many fields, including chemistry, materials science, geology, and engineering.