NIOBIUM JEWELLERY AT MJSA EXPO 2009

摘要

Over the three days from March 8th to 10th this year the Manufacturing Jewelers & Suppliers of America (MJSA) held its annual Expo in New York. Included among the numerous types of jewellery was the category known as Reactive Metals Challenge, in which no less than three niobium metal entries were provided by the designer Joan Dulla.