BERRICLE Rhodium Plated Sterling Silver Round Cut Cubic Zirconia CZ Halo Engagement Ring Set METAL: rhodium plated silver, stamped 925, high polished finish, nickel free. RING BAND WIDTH: 4mm. PREMIUM QUALITY STONE: Main Stone: 1 carat round cut simulated ruby cubic zirconia (6.5mm) STYLE: This 2 piece halo ring set flaunts chic sophistication and vibrant brilliance with endless sparkles. STYLE: Engagement - Ideal for engagement, this ring will be perfect for your special one.