This set of 11 round cup ceramic crucibles is a must-have for any collector or hobbyist interested in mining and science. These vintage crucibles are made in the United States and are perfect for melting gold and silver. Each cup has a diameter of 1 ½ inches, making them the ideal size for small-scale melting projects. These crucibles are not only functional, but also visually appealing with their unique design and historical significance. They are a great addition to any collection and can be used for various purposes, such as display or educational purposes. Don't miss the opportunity to own a piece of history with these vintage crucibles.