How do new crystals form or grow larger?

New crystals form through a process called crystallization, which occurs when atoms or molecules arrange themselves in a highly ordered structure, typically from a solution, melt, or gas. This can happen as the temperature decreases, leading to supersaturation, or when the concentration of solute increases. Crystals grow larger as additional atoms or molecules attach to their surfaces, continuing to align in the existing crystal lattice. Factors such as temperature, pressure, and the presence of impurities can influence the rate and quality of crystal growth.