Image of crystal structure
I recommend to fetch the crystal structures of inorganic compounds via specific Google search pattern site:crystallography.net &lt;keyword(s)&gt;, e.g. in your case

site:crystallography.net PbWO4

yields in this COD page where you can use JSmol to do basic visualization right in your web browser. Alternatively, you can download CIF and work further offline with numerous free tools such as Mercury or Olex2. Both are free and available for Windows, Linux and MacOS.

Mercury



Olex2