A white opal ring set in gold is a captivating piece of jewelry that combines the enchanting play-of-color of opal with the luxurious sheen of gold. White opals are known for their milky white background and vibrant flashes of colors such as blue, green, red, and yellow, which change and move as the stone catches the light. This iridescence, known as opalescence, makes each opal unique, adding a mystical and elegant quality to the ring.