A 0.51 carat round black spinel with 0.03 carats of round yellow diamond in 18K yellow gold over sterling silver ring measuring approximately 0.85 inches long by 0.13 inches wide - the black spinel band ring with genuine yellow diamond accents. Black spinel provides the dark stone presence; yellow diamond accents add warm sparkle that echoes the gold setting. Natural black spinel and natural yellow diamond together in warm gold create a sophisticated dark-stone band ring. Not sizeable.