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.
Three manner of wayes the Planets are varied or changed, by reason of their first qualities, of their Houses, and significations. - William Lilly (1602.-1681.)