The ginkgo family dates back to when dinosaurs roamed the earth. Ginkgo biloba, native to China, has been considered effective in the treatment of asthma and other allergic reactions. Materials: The Ginkgo necklace is cast in hand patinated bronze. Measures: 2" L x 2.5" W Artist Michael Michaud casts his jewelry from real flora collected in his travels around the world. The Silver Seasons collection features hand-crafted pieces, each capturing the unique details of genuine nature. Michaud finishes each design in bronze, sterling silver, or gold, adding genuine stone and pearl accents to capture the beauty of the natural world in eye-catching, stylish motifs.