Re: I use both methods....not worth arguing over! (More text)
We each have our favorite methods. I was just sharing another perspective, not trying to criticize your method.
I have examined my crystals in sunlight and under a high intensity lamp, and there are no visible ripples or burned spots. I know what you mean, as one of my early efforts at crystal polishing, produced the streak or ripple effect to which you referred.
Another solution is to use a larger soft polishing wheel on an electric shop motor, with a rheostat. That way you have more polishing surface with the edge of the polishing wheel, which is enough to cover the entire crystal. And you can control the speed of the motor. My local watchmaker has such a buffer and it prevents any ripples that would occur from smaller polishing devices.