Having followed the various threads on candle magic, I thought I post some info that may relate somewhat to this subject. More precisely speaking, relating to the effects of candles on subtle energies of crystals, info which I ran into just today.
A clairvoyant by the name of Nat Bondar made some research, along with Tony Bondar, into the energetic healing qualities of crystals and stones.
For one thing they discovered that when lighting a candle placed in crystal and mineral candle-holders the subtle mineral energy of the stone would increase its field by about 300 %. It stayed that way as long as the candle was burning. As soon as the candle went out, the energy field would go back to normal size.
Similar observations were made when putting crystals in soil or in water.
My personal note: that about candles may explain why I feel very drawn to, and in a somewhat serene or divine mood, when I light up a candle in a selenite candle-holder that I keep at home. I’ve felt inclined to light it up when doing various forms of divination, such as using a pendulum, meditation, etc. (Although I of course don’t think it is a requirement at all).
The above is only a portion of their research.
See article here for more info:
[http://www.articlesbase.com/spiritualit]
I find their research quite interesting and will probably look into it a bit more, partly on account of that they set out to find how it is that stones work in a particular way. Not just that they work that way, as you can study in most crystal healing books.
See their website for more info:
http://www.crystalharmony.co.uk
Enjoy!