Re: Why does a class ring spin on the end opposite of the end with the stone?

With the center of mass of the spinning ring low, the spinning ring precesses quickly and wobbles nearly flat. As the ring wobbles nearly flat the stone when in an elevated position gives the ring more stability in the spin similar to a spinning gyro. The balance is achieved by the conservation of angular momentum (action-reaction torques). The stone on top provides greater rotational inertia in the precession and thus more stability.

Cheers,

Les Uhrich