LEVINSON, A. A.; COOK, F. A. The United States of America: A Cornerstone of the World Gem Diamond Industry In the 20th Century. Geoscience Canada, [S. l.], v. 28, n. 3, 2001. Disponível em: https://journals.lib.unb.ca/index.php/GC/article/view/4085. Acesso em: 5 may. 2024.