Sterling Silver or Gold-Plated Sterling (18k Vermeil) are textured with shiny lines that reflect the light. Oxidized Sterling Pattern has bright dots. "Raku" copper has an organic, smokey color. Niobium has multicolored dots. The gold-plated earwires are left sterling at the top where they rest in the ear, and they clip closed in the back.
To see other finishes in this size triangle earring, search for "Large Batik Triangles" or "Large Hiirodo and Raku Triangles"