Swarovski Rings. Lucent series. SKU: 5607352. Color: Blue. Ring style: Fashion. Swarovski Lucent Blue Cocktail Ring. This cocktail ring is sculpted from vibrant colored crystal and features over 138 facets and the ring is finished with a tonal metal inlay. This ring is part of the Lucent family, designed by Creative Director Giovanna Engelbert for Collection I. Collection: Lucent.