A 0.90 carat marquise black Ethiopian opal with 0.27 carats of round white zircon in 18K yellow gold over sterling silver ring - the black Ethiopian opal ring where the marquise cut gives the dark play-of-color stone a pointed, directional form. Black Ethiopian opal's dark body color intensifies the spectral color display relative to standard opal. The marquise cut creates a teardrop of shifting color. White zircon accents.