A ring in a dream usually points to commitment -- to a person, a promise, or a sense of wholeness you're working toward. Losing a ring can reflect anxiety about a bond weakening, while receiving one often names a readiness to deepen a connection you've been circling around.
The comets should be used when they appear and in what they rule; just as fixed stars, they have to be used according to each one's nature. - Picatrix (Andalusia, ~1000.AD)