dawntarot
I have no idea if this would help for chronic pain. http://www.healing-crystals-for-you.com/shungite.html I've carried a piece on me for a few days and didn't notice any difference with my feet...but it may take time or possibly need to be placed where the pain is. I have pain in both of my feet and I did notice when I carried howlite my feet and ankles felt better. And I noticed a big difference in the way my feet felt after I put the howlite away.
My suggestion on how to use the crystals would be to experiment with them. For example when I worked with labradorite and carried it in my pocket....I didn't feel its vibration but my senses were sharpened. When I tried meditating with it and placed it over my head I could feel its vibrations all the way down to my feet. So depending on where the pain is...you could try simply holding the crystal in your hand...put it on your skin where the pain is..or even try putting it on the chakra closest to where the pain is. You'll figure out what works best for you : )
I've noticed that placing stones directly on the area doesn't seem to help much... the pain just moves, like it's running away from the crystal So far the best thing has been meditating with them. I'll keep trying different things as you suggest. Thanks