The rock has ever since started changing color, and the scent of the rock smells sweet.
The ancient art of alchemy, if it works, would change the entire planet for good. It's something worth looking into - transmuting ordinary rocks into precious metals. The change of color and scent by running a simple frequency indicates it can be done. If water and rice can be purified, why can't a rock's composition be changed?
If anyone's willing to run similar experiments, let me know, and post up your results. Sound vibrations, frequencies and various mantras can be found on Youtube.