Mystical Amethyst Pendant

Papa showed Lara how, even if you hold completely still, the amethyst will begin to spin.  I tried it too.  Simply by saying   "clockwise" or "counter-clockwise" or "stop," I could control the movement of  the pendant.  Our bodies are electromagnetic, right?  I was sure I wasn't moving but, somehow, our thoughts must convey an imperceptible movement to the fingertips.  BTW, before sonograms, we'd predict the gender of an unborn child based on whether the pendant circled clockwise or counter-clockwise.