The Hope Diamond!
A resident of the Smithsonian Natural History Museum, the Hope Diamond is one of the biggest tourist draws. It has a long and infamous history, which makes it all the more captivating, if you ask me.
Did you know? This blue diamond phosphoresces red after being exposed to UV light. Although museum visitors will only ever see the diamond in visible light, I thought this was still a cool picture:
Have you seen the Hope Diamond in person? Did you know it was mailed to the Smithsonian courtesy of the US postal system? It's true--they have the original packaging at the Postal Museum!