The La Terre series implies the structure of the layers of soil. Taken out of context, the series is a lovely exploration of texture, with each surface having a different characteristic. The widest part of the ring is approximately 10mm. Although the design allows the ring to be adjusted in size, please specify your preferred ring size. Material: Britannia Silver 958 This piece is crafted with a base of Britannia Silver 958, a high purity silver which retains its bright color (unlike sterling silver which tarnishes easily). We provide a small zip lock bag in which we recommend to store your piece/s to keep them away from the air. This will help to keep them bright for a long time.