5 Carat Opal Diamond Earrings in Yellow Gold.  These modern opal and diamond earrings are composed of 14 karat yellow gold that secures a gorgeous cabochon cut opal which is double prong set underneath a bezel set diamond. The opals contain a brilliant green flash with warm blues and reds that contrast beautifully with the yellow gold. The accent diamonds are bezel set with very fine milgrain detail and total .27 carats. Set with a shepherds hook these drop very slightly creating some nice movement to accentuate the colors of the opals.