I looked at several “healing gemstones and crystals” books about the subject, and each book recommends something different. One book recommends onyx being placed on the each ear for 15 minutes, where a few other books don’t even mention onyx but recommend quartz crystal, amethyst, or another gemstone. Where should the gemstone be placed, worn, or should an elixir be made?
Although I do not know the answer to your question, I thought I would pass on this formula which has had success healing deafness…the b and b tincture
be sure to use organic or wildcrafted herbs for best results. Making an herbal tincture would be best.
the proportions of herbs in found in his book “school of natural healing” by Dr John R. Christopher