👉 A crystallographer is a person who specializes in studying crystals, which are solid forms of matter. They work with tools such as a microscope and X-ray crystallography equipment to study the physical properties and structure of these structures. Crystallographers use their knowledge of chemistry, physics, and mathematics to determine the composition, size, and arrangement of atoms or molecules in a crystal. This helps scientists understand how materials behave under different conditions and how they can be used for various applications such