Material:99.99% pure red copper Thickness:2.2 mm Craftsmanship:Fully handmade with precise cutting, welding, and twisting techniques. Each ring is carefully shaped to ensure durability and a refined finish. Design:This twisted copper ring features a simple yet elegant structure, highlighting symmetry and handcrafted detail. Its minimalist style makes it suitable for everyday wear or stacking with other accessories. Copper may naturally oxidize over time, developing a unique patina that adds character to each piece. You can clean it gently with lemon or vinegar to restore its shine if desired. Each piece is individually handmade, so slight variations are part of its unique charm. Disclaimer: This product is intended for decorative and aesthetic purposes only. It does not provide medical, physical, or scientific effects.