The emerald cut is the choice for a wearer who wants the stone to be read, not just seen: its stepped facets create broad reflections that draw attention to the stone's geometry and color. Rachel Zoe uses a green emerald-cut CZ here, surrounded by a halo of white CZ in 14K gold over sterling silver - the color contrast between the green center and the white surround amplifying the visual weight of the center stone. Butterfly back closure. The green CZ in emerald cut is a strong color choice that skews more gemstone-serious than pastel or novelty color - it reads as a color jewelry piece with design credibility.