Hello,
We are sorry to hear that this product did not meet your expectations.
Having checked your order, we can confirm that the characteristics of the item purchased, including its material and surface finish, are clearly stated in its product description. How a product changes over time can also depend on several factors, such as conditions of use, perspiration or skin acidity, cosmetics, humidity or exposure to certain chemicals.
Depending on your needs and the constraints of your use, materials such as gold-filled, 925 silver or stainless steel may be more suitable.