14k Yellow Gold Ring with Natural Gemstones and Lab-Grown Diamonds A ring this colorful deserved a few surprises. A deep London Blue Topaz takes center stage, surrounded by our signature Starry diamond setting. Look a little closer and you'll discover pink sapphires, amethysts, peridot, citrine, aquamarine, and blue sapphires tucked into the band. Like a little rainbow, hidden in plain sight.