What did each propose to do with the Great Carbuncle and which ones had noble aims and which ones had ignoble aims?

In Nathaniel Hawthorne's "The Great Carbuncle," various characters propose different uses for the precious gem. The scientist seeks to harness its power for knowledge and discovery, reflecting noble aims. The politician desires to use it to enhance his own status and gain power, revealing ignoble intentions. Meanwhile, the artist wishes to capture its beauty for inspiration, showcasing a blend of noble and personal motives.