This is a Juliana Black Diamond Smoky Quartz AB Rhinestone Flower Sprays Swirl Brooch DeLizza Elster D and E. This beautiful brooch has sparkly black diamond smoky quartz navettes and clear aurora borealis chatons, some of which are in the four floral sprays. The setting is very shiny silvertone with a tight rollover clasp. It measures 2.5 inches in diameter. For reference, see Juliana Jewelry Reference/Identification and Value Guide by Ann Pitman, page 199.