What are 2 uses of crystallization?

1 answer is to make brown sugar I have another answer,: obtaining crystals can be used to identify the structure of a complex compound, usually organic compounds. This method was used by Watson and Crick (some names you should or will know) to determine to structure of DNA. The method of crystallising DNA was developed by Rosalind Franklin (the unsung hero). She crystallised DNA and used x-ray diffration to obtain a pattern. This pattern was used by Watson and Crick to determine the structure of DNA.