Titanium and niobium are members of the reactive metals, which have the unique property of taking on color when exposed to electricity or heat. Available colors are as follows:

Use the numbers to specify which shade you want.

Durability of the colors

You cannot scratch off the color with a fingernail, and the color will not fade from sunlight or solvents, including acetone. Most beads and earrings are not subject to a lot of abrasion so the color will remain on the jewelry with proper handling. When not wearing, keep the jewelry in its original packaging or hang where it will not bang into other metal objects. If necessary, clean with window cleaner, shampoo, or alcohol.

How we get the colors

When electricity is used to create colors on niobium and titanium, the process is called anodizing. During anodizing, the metal is immersed into an electrolytic bath through which an electric current is passed, causing an oxide layer to form on the surface of the metal. Light striking the surface of the oxide layer and the metal below will result in two refracted light rays which reinforce each other and produce different colors depending on the thickness of the oxide layer. This phenomenon, called optical interference, is responsible for holographic images and the iridescent colors in butterfly wings and oil slicks. The colors are called interference colors, and were first described by Issac Newton in the 1670s.