Phosphoresence of the Hope Diamond
Curator Dr. Jeffrey Post led a team from the Smithsonian and the U.S. Naval Research Laboratory to investigate the intense, red-orange phosphorescence exhibited by the Hope Diamond after exposure to ultra-violet light. They discovered that all type IIB blue diamonds exhibit similar phosphorescence behaviors and that the specific phosphorescence spectral properties might be unique to each individual blue diamond, enabling the researchers to essentially “fingerprint” each stone.
The Hope Diamond phosphoresces red under ultraviolet light
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