9kt yellow gold enamel detail cotton recycled polyester cord band tennis racquet charm knot detailing adjustable fit Normal everyday use and external agents may reduce the lustre of gemstones and gold surfaces. To maintain, use specific, non-abrasive products specially meant for cleaning jewellery. This jewellery is crafted with natural gemstones. As such, each piece is unique and may differ slightly in colour or texture from the item pictured.