The defining feature of a crystal is that it is made from regular, repeating blocks, but a chance discovery in an old German book has turned that view on its head
Source:
https://www.newscientist.com/article/2225276-weve-discovered-a-strange-twist-in-the-story-of-how-crystals-form/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home