Instruct: Classify a review into positive or negative sentiment.
Query: Desperately needs larger font and photos.

I am a geologist, but for heaven's sake, pics at least as good as a cheap field guide would be in order, especially for some of the more unusual minerals. Would also love to see some of the zillions of examples of granites that you can find at your average kitchen type granite center. The geology though is good, just a bit dry.