Swarovski Ladies Rings. Constella series. SKU: 5642638. Color: White. Metal Type: Rhodium Plated. Gem stone type: Cubic Zirconia. Swarovski Ladies Constella Stilla White Cocktail Ring. The Stilla ring features a princess-cut stone in a double-prong setting is enhanced with a pave gallery and sits on sleek rhodium plated band. Material: Rhodium plated, Zirconia. Collection: Stilla.