Sterling Silver Square Wedding Ring with Clear CZ Stones - Sterling Silver Engagement Ring with Square CZ Stones Made with 925 Sterling Silver with Rhodium Plating to prevent tarnish. Stones are AAA grade cubic zirconia stones. They are prong set (not glued). Center Stone: 9 mm Band Width of Two Rings: 2 mm (0.10 inch) Gift wrap options available at checkout for under $0.99.