Here is a question from one of our customers:
Q: Are there any stones or crystals that do not heal and/or carry negative energy?
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. Truthfully, I don't know of any crystal that does not work, only people who can't be healed. There are some people who experience full healing and those who don't. There are many crystals that absorb negative energy. Cleansing the crystals on a regular basis will remove the negative energy. As for crystals that are inherently negative, if there is, I haven't heard of it.
Master Crystal Healer