Two copper bangles and one sterling silver bangle are linked into a single moving composition. Each slim band is handcrafted before the three elements are joined, giving the piece a mixed-metal character. Copper may be allowed to age into a deeper patina or cleaned to refresh its surface. Details: Two copper bangles and one sterling silver bangle. Approx. internal fit diameter: 68 mm. Individual band thickness: approx. 1–3 mm. Copper was the first metal ever used by humans. Middle Eastern artisans of the 5th and 6th millennia B.C. fashioned this lustrous, orange-red element into: tools, utensils, weapons and jewellery. Copper is said to have many beneficial health properties, including the pain relief of arthritis. You can either let your copper jewellery tarnish and develop a beautiful aged patina with time or you can easily clean it to maintain its rose gold colour. The easiest way to clean copper: Rub a mixture of 1 tablespoon of table salt and 1 cup of white vinegar onto the copper with a soft cloth and rinse. Or, immerse the tarnished copper into a pot of 3 cups of water and the salt-vinegar mixture, bring to a boil and boil until the grime and tarnish comes off