A round black spinel ring in 18K yellow gold over sterling silver at 0.35 carats creates a refined black-and-gold color contrast ring where the natural black spinel's glass-like luster meets warm precious metal. Black spinel is a genuine mineral with high refractive index - not dyed glass or imitation, but a natural gemstone with the specific depth and luster that only real gemstone material produces. The warm gold over sterling setting creates maximum contrast with the deep black stone while providing the quality construction that makes this an everyday fine jewelry piece. An accessible entry to genuine black gemstone jewelry in warm gold.