Jenaforte 3 Cubic Zirconia Sterling Silver Women Engagement Ring Surrounding Cubic Zirconias, Size's (5 to 9) .925 Sterling silver, Rhodium plated, Nickel-free guarantee. CZ engagement ring Center Stone: 8mm round CZ (1), Side Stones: 4mm round CZ (2). Side Stones: 2mm round CZ (6), Surrounding Stones: 1.75mm round CZ (8). Surrounding Stones: 1.25mm round CZ (18), Made in the U.S.A.