Herkimer Diamonds are detoxifiers, they can relieve stress created by toxics and electromagnetic smog and protect you against radioactivity.
They are also very good in stimulating memories from past lives were wounds and diseases have been gathered that are still are effective in this life. That is one of the reasons that this is such a strong crystal.
They can stimulate powers like telepathy. They can open chakras and making spiritual energy flow. They can also be used to gather information about past lives and to recognize blockages and resistance to your own spiritual growth. Herkimer Diamonds are useful in transformation and to free yourself again from inner pains and negative thoughts that are not useful or relevant in the present and activate the light body. They can correct DNA, cell disorders and have the ability to align al the Chakra’s.