how do you wind a quartz watch?
None.. A pendulum will still swing as a pendulum do... IMHO
i am sorry but you are in the wrong section i wish i knew the answer to your question
Use the one that feels right to you. I like to use clear quartz crystals or amethyst on a silver chain or silk ribbon. The fewer flaws the better, at least for me, the energy flows better in a clearer stone.