Herkimer Diamonds

Herkimer Diamonds are ascension stones, and they will take you to the highest spiritual vibration possible while still being in your physical body. These crystals have powerful metaphysical properties and are strong stones to aid astral travel... as they help to connect the astral plane to the physical plane. They are beautiful and powerful high vibration crystals, that boost clairvoyance abilities, and they act as powerful amplifiers when you are using them with a small stone.
 
Herkimers are also used to balance polarity between any two things, such as the energy between chakras, to achieve balance between work and home, and for inner ear infections to balance between the ears. 

Herkimers are especially good for vertigo, and to balance the left and right brain hemispheres or any thing with yin/yang properties.