Final answer:
Fitz-Norman Washington is the fictional character who discovered diamonds leading to a rush in 1906. This tale is from F. Scott Fitzgerald's work and is not an actual historical event.
Step-by-step explanation:
The individual who found two diamonds that set off a brief diamond rush in 1906 was Fitz-Norman Washington. However, it should be noted that this story comes from a work of fiction by F. Scott Fitzgerald and does not represent a historical fact. The story of Fitz-Norman Washington highlights the allure and impact of precious mineral discoveries, which catalyze rushes like the famous California Gold Rush and diamond rushes in South Africa with Cecil Rhodes and the De Beers company.