Oxidization refers to an intentional color and texture we apply to some pieces. On brass, oxidization is black in color (and on iron, it’s red – AKA, rust. 🌈 The more you know!). You’ll see oxidation used in the recessed etchings on our bridge cuffs, and in stripes and chevrons on many of our fashion pieces, for example. Just like rust, oxidization will wear away with time, especially on non-recessed surfaces. We can reapply oxidization your Betsy & Iya jewelry for a small fee.