This collar necklace is made with 18 karat yellow gold and has a marquise cabochon cut opal as its main stone. The opal weighs .77 carats and measures 12.09 x 4.94 x 2.25, sitting in a bezel setting that keeps it safely in place. The yellow gold creates a warm background that makes both the opal and pearl stand out. The necklace also has a pear-shaped dangle that moves when worn, adding some fun to this bold piece.