Me: "I like going to mineral shows."
Person A: "I know! I use crystals for healing too!"
Person B: "Actually I don't believe in crystal healing."
Me: "... actually I like geology."
Persons A and B: *blank stare*
@TarkabarkaHolgy You could split the difference and get both a copy of Albertus Magnus "Book of Stones" as it is simultaneously a book of magic, and probably one of the first books about geology.
*feels there is always a way to make everyone happy with antiquarian book choices*