Crystallography is the science that examines crystals, which can be found everywhere in nature—from salt to snowflakes to gemstones. Crystallographers use the properties and inner structures of crystals to determine the arrangement of atoms and generate knowledge that is used by chemists, physicists, biologists, and others.
Many excellent references in the link above.
This informational site is shared as an educational tool with permission and encouragement.
Music from NASA.
Meet our Ambassadors Cheri and Jill