Online. Crystal structure database that includes every structure published in the American Mineralogist, The Canadian Mineralogist, European Journal of Mineralogy and Physics and Chemistry of Minerals, as well as selected datasets from other journals.
Online. Contains molecule, crystal and crystallization data for macromolecules for which diffraction quality crystals have been obtained. These include proteins and nucleic acids, various complexes, and viruses.
Image source: Room temperature crystal structure of cryolite. CC0 1.0. Wikimedia Commons.