Creative Ring

Finger armor ring - Typically spans from the base of the finger to just below the nail or middle of the second joint and includes a bending joint. This is a very modern and restricted fashion statement.
Friendship ring - Friendship rings are used to symbolize a close relationship that has no romantic undertone.
Gay Pride ring (a.k.a. "Rainbow ring") - Representing gay pride, usually a band, either set with seven stones, inlaid with seven enameled lines, or set with seven larger stones each in a different colour; the colours representing the Rainbow flag (LGBT movement). In decades past, a stone-set ring worn on the right hand ring finger or the pinky of either hand represented a call for gay equality.
Gimmal ring - Ring made of 2 or 3 hoops that are hinged at the back and meant to interlock and open; popular for betrothals in 16th and 17th century Europe