Material: oxidised sterling silver (925). Order processing time: 10 business days. The Nervure II ring is a chunky, wide band, solid sterling silver piece inspired by gothic architecture, particularly the medieval ribbed vault. This architectural element typically features a framework of intersecting or diagonal arched ribs filled with stones or bricks. In this design, the usual convex arches are transformed into concave arches, reinterpreting this classic architectural motif as a ring. Get you piece of wearable architecture. This item is fully handcrafted using natural materials; it is not printed or automatically produced. Executed in a unique technique, combining the cutting edge and traditional materials. Every step of the production process is environmentally friendly and all kinds of raw and supporting materials are vegan. 1 tree planted for every product sold! Find out more.