As a high-quality reproduction from the late 20th century, these Van Cleef Inspired Cocktail Rings are quite collectible as retro costume jewelry. The Band: The gold finish is heavy gold electroplating over a base metal like brass or copper. The Black Sections: These panels mimic sculpted onyx cabochons but are actually smooth black enamel inlay or molded acrylic. The Centerpiece: The dome features a cobblestone pavé section set with foil-backed glass rhinestones or cubic zirconia instead of diamonds. This ring is a vintage costume piece heavily inspired by the iconic "Philippine" dome ring created by the luxury jeweler Van Cleef & Arpels during the 1960s and 1970s.