This piece is handcrafted from 99% pure copper. Over time, the copper may naturally darken or develop a patina. This is not a defect, but a natural property of real copper, giving each piece a unique appearance. The color change of copper is influenced by environmental factors such as air exposure, humidity, and daily wear. Many people appreciate this natural evolution as part of the material’s character and authenticity. With its double helix-inspired design and warm copper tone, this bracelet offers a distinctive and timeless aesthetic suitable for everyday wear or personal styling. You may polish the copper at any time or allow it to develop a natural patina depending on your preference. Material: 99% pure copper Disclaimer: This product is intended for decorative and aesthetic purposes only. It does not provide medical, physical, or scientific effects.