A 3.40 carat rectangular octagonal black spinel 18K yellow gold over sterling silver dangle earrings measuring approximately 0.83 inches long by 0.22 inches wide with leverback backings - the black spinel earring where the rectangular octagonal cut creates a sophisticated geometric stone form with genuine natural vitreous luster. Black spinel's deep black carries a surface quality that genuinely differentiates it from black CZ - a real gemstone with real optical character. The warm gold setting creates the high-contrast combination that black stones do best in. Leverback backings.