I bought this PDF for pretty much the same reasons the front page said--only I, as the DM, wanted to be able to provide the detailed descriptions that my players didnt even know they were lacking.
The thoroughness of the generator, albeit a little slow in the process, if amazing. It covers many different attributes of the gem and cost and description. It also provides a nice understanding of the gems it presents, without all the "scientific" extras that confound the subject.
The process for generating the gems is slow enough that it isnt conducive for making them on the fly, but if you have time to prepare, the results are outstanding.<br><br><b>LIKED</b>: Simplicity of gem description and explanation.<br><br><b>DISLIKED</b>: The book isnt well suited for on-the-fly generation.<br><br><b>QUALITY</b>: Very Good<br><br><b>VALUE</b>: Satisfied<br>