The best hard scientific proof I can provide is what I stated earlier. It is also largely a matter of esoteric knowledge which is not necessarily science based but can explain things to a much higher degree than hard science can. Healing starts with the energy body and works it's way down to the lower vibrational fields into the physical body. Crystals are dense manifestations of various kinds of healing energies. Those who accept those energies have the capability to receive the healing and be aware of it.
If you research piezoelectricity and Pyroelectricity you will see scientific evidence of the energy transfers that occur when one comes into contact with a crystal or mineral.
These are awesome and first I've seen of its kind on bitcointalk that's for sure. I'll fling you a PM in regards to shipping for Australia. I have an Aunt who is well into these kind of stones