Another piece of "Concentrico" Family ! The surprising upper Spiral is the main feature of this Ring. The band of the ring is made by a empty-full game, and being open it is adjustable from size 6 (diam 1,6 mm) to 7 (diam 1,75) about.
The largest Spiral Diam. is 20 mm.
You can complete the set "Concentricity Set" with one of the Earrings "Orecchino Concentrico" .