At the height of crystal science you have meteors and quartz. This is due to the fact that a pure double terminated quartz can do anything any other crystal or fossil of any type on this planet can do as it is a receptor capable of sending and receiving from all spectrums.
Meteors find themselves with various unknown properties because they contain particles found outside of our planetary sphere. The rarity of certain crystals have the tendency to drive the price up and increase their stories of mystical properties however this is not always the case. It is also possible for the spiritually advanced to connect with the frequency and essence of a particular crystal or mineral through imagery.