All of the color these earrings have is created in a clear oxide! Just as a soap bubble has many colors which change as the thickness of the bubble changes, these niobium earrings will show the color I choose when I form a clear oxide layer on the grey niobium shape using only electricity in a liquid bath of washing soda and water. More voltage equals thicker clear oxide which creates a different interference color.
To see other finishes in this size triangle earring, search for "Medium Hiirodo and Raku Triangles," "Medium Triangles," "Medium Batik Triangles," "Medium Mica Triangles"
Almost 2" long x 1" wide