I have the best guide to mineral specimens out there.  3rd edition 1998 and out of print.  This in invaluable resource.  Many times I came across a mineral I did not know and this guide would give me the rarity, mineral makeup, mohs...the works!  It is most useful if you are interested in rare minerals.  Although it is written in Dutch(?printed in Germany)...it is pretty easy to read...I have a few notes in very light pencil on page 7, so I know the key.  And it's really easy to look up a simple word for color, if you can't guess.  This book is a HUGE chart with thousands of minerals...nearly everyone known at that time!  The names are easy to figure out too...as an example, if you were looking for Barite, they spell it Baryt and the chemical structure Ba[SO4] is listed next to it.  I am no longer in the biz...so I don't need it anymore.  ISBN 9783921656176  by Dr. Stefan Weiß unter Mitarbeit von Dr. Rupert Hochleitner und Dr. Hans-Jurgen Wilke.  Buddy me a credit if you want it!!!

Das große Lapis Mineralienverzeichnis

Buddy me a credit if you want it!!!