This season, the COS jewellery designers explore materiality through tactile surfaces and organic shapes. Crafted from gold-plated recycled brass, these modern rings are hammered into irregular, molten silhouettes and designed with a subtly tarnished patina. Brass is a versatile material that can be recycled numerous times without losing any of its properties  Shell: 100% Post-consumer recycled brass. Plating: 100% Gold. Excluding trims