Patent ID: 7950251

Claim:
A piece of jewellery including: (a) at least one inner ring; (b) one complete or partial outer ring, wherein the rings are graduated in size so as to be able to nest inside each other; (c) a pair of pivoting means arranged on an axis common to the two rings, wherein the pair of pivoting means varies the degree of nesting of the rings by pivoting the rings relative to each other about the axis; and (d) indexing means arranged for selectively maintaining the rings in a plurality of relative positions, wherein a plurality of the relative positions comprises at least a first position in which the rings are nesting and a second position in which the rings are tilted, wherein the indexing means includes a stud secured to a first ring and a first elongated aperture arranged in a second ring, wherein the stud is engaged in the aperture and provided to move transversely therein when the first ring is pivoted relative to the second ring, and wherein one edge of the aperture cooperates with the stud and thus selectively immobilises the stud in a plurality of the relative positions.