The toi et moi format with color CZ is a bolder proposition than the white version: yellow and green stones paired on a single band, each shape reinforcing the color contrast between them. Rachel Zoe uses a radiant-cut and pear-shaped CZ in yellow and green set in 14K gold over sterling silver - the warm gold amplifying the yellow stone while the green reads freshly against it. Two-stone color rings have significant trend momentum right now because they occupy the space between fashion jewelry and fine jewelry in a way that feels current rather than compromised. The color choice here is distinctive - yellow and green is an unusual pairing that rewards the wearer who commits to it.