Herkimer Diamonds naturally form with 18 facets and are double terminated (points at both ends). They are not really diamonds but known as the most powerful variety of Quartz crystal (they are brighter and have a higher vibration) and are found only in the foothills and surrounding areas of Herkimer County, New York.
Being double terminated, they have the ability to not only transmit their own energies, but to receive spiritual energy and to amplify and focus it intently. These extremely clear crystals often have black inclusions which can be used for focusing on while meditating. Some have water inclusions within them, which aid the healing of emotional problems.
More Healing and Spiritual uses:
Clears the chakras, opening channels for spiritual energy to flow. Used especially for the heart, brow and crown chakras.
Reduces stress, providing a natural filter for negativity.
Also helpful with dream work, past life recall as well as meditation.