18 Karat Gold, Diamond, Colored Diamond and Cultured Pearl Flower Brooch, Ambrosi. Photo Sotheby's

The petals set with small round diamonds of yellow hue weighing approximately 17.00 carats, set in the center with a cultured pearl measuring approximately 9.5 mm., the stem set with near colorless baguette diamonds weighing approximately 3.50 carats, signed Ambrosi, with initials CLM. - Estimate 15,000-20,000 USD

Sotheby's. Magnificent Jewels, New York 20 september 2011 www.sothebys.com