Crystals (ISSN 2073-4352; CODEN: CRYSBC) is an open access journal, published monthly online by MDPI, that covers all aspects of crystalline material research, including liquid crystals and biomolecular crystals. Open Access free for readers, with article processing charges (APC) paid by authors or their institutions. High Visibility: Indexed by the Science Citation Index Expanded (SCIE-Web of Science), Scopus , SciFinder (CAS), Inspec (IET) , Current Contents - Physical, Chemical & Earth Sciences and other databases. Rapid Publication: manuscripts are peer-reviewed and a first decision provided to authors approximately 12.2 days after submission; acceptance to publication is undertaken in 2.6 days (median values for papers published in this journal in the second half of 2019). Recognition of Reviewers: reviewers who provide timely, thorough peer-review reports receive vouchers entitling them to a discount on the APC of their next publication in any MDPI journal, in appreciation of the work done.