Thanks for contacting us with you question. Herkimer Diamonds do have the ability to enhance other crystals. Crystals have an energy field around them, so just place your other crystals near the Herkimer Diamonds to benefit from them. They work best with other high energy stones, such as Moldavite, Danburite, Phenacite and Scolecite. I hope this information is helpful.
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Disclaimer: I must share the standard disclaimer that I am not a doctor and cannot give out medical advice. Crystals for healing should be used as a compliment to other therapies and not as a replacement for regular medical care.