Vca RobertoCoin Four-Petal Flower Ring, adorned with small white diamonds, featuring a metal brushed hollow design. Made from brass and plated with 18k gold. RobertoCoin, the Italian jeweler founded by Robert Coin, presents the Princess Flower collection, which resembles the four-leaf clover of Van Cleef Arpels. The four-petal flower is one of RC's iconic designs, inspired by the decorative totems of Venetian palaces. The elegant oval-shaped petals are crafted from various materials, including diamonds and gold.