"These triangular designs are rack plated in gold and silver finishes. Rack plating means each piece is hand hung for optimal coverage and gives the pieces a very glossy look. The black is black oxidized metal. The Following Finishes and Sizes are Available. ANTIQUE SILVER & GOLD - 18 K gold plating and antique silver alloy plating over brass. Approximately 2 1/4\" in length. Surgical steel ear wires with rubber back stoppers SILVER & BLACK - Silver alloy over brass and black oxidized me Modern Brass Earrings With Oxidized Finish, Nickel Free Triangle Metal Earrings, Silver Geometric Pierced Earrings, Triangle Metal Earrings For Gift, Modern Silver Triangle Earrings, Modern Geometric Sterling Silver Earrings, Modern Nickel-free Triangle Earrings, Triangle Gold Metal Earrings, Modern Triangle Metal Earrings