This Arrow Supreme Pendant Neckalce is made with 18K yellow gold and feature a row of white diamonds atop a spear shaped opal. This Ethiopian necklace is a major show stopper with its ample size and extreme fire and luster that can light up a room. The wonderful color play inside this particular opal is like bottled up lighting inside a gemstone with flashes of red (the most rare and sought after color in the world of opals).