The Princesse de Monaco rose brooch. Courtesy Mikimoto (America) Co., Ltd

The Princesse de Monaco rose brooch is a breathtaking work. A rare natural pink conch pearl glows in the center. Tahitian pearl buds and demantoid garnet leaves crown the piece. The workmanship is equally impressive–setting round, pear, oval, and marquise shaped pink diamonds and round white diamonds on a concave surface requires the hands of a master craftsperson.