A 1.17 carat round Ethiopian opal with 0.04 carats of round white zircon in 18K yellow gold over sterling silver ring - the Ethiopian opal ring where the stone's play-of-color creates a multi-color optical presence that changes continuously as the stone moves. Ethiopian opal produces particularly vivid spectral color from its crystal structure. In warm gold, the color play appears against the warm metal background. Not sizeable.