Mellerio Retro Yellow and White 18k Gold Diamond Ruby BroochA gorgeous retro brooch by Mellerio dits Meller, made of 18k yellow and white gold, features diamonds and rubies. The brooch has a distinctive retro look, with a great geometry and diamond embellishments. A central, bow like yellow gold trapezoid part of the open work design has a white gold ornament in the middle. It's generously encrusted with the invisible set diamonds and a cabochon ruby. The edge of the trapezoid is decorated with graduated