Scientists rediscover Roman color-changing glass
The gist
University of Sheffield scientists recreated ancient Roman glass that shifts from green to ruby red in light.
The feat revives a 1,600-year-old effect that has baffled experts for centuries.
How it unfolded
- 2022International experts recognized the Lycurgus Cup as one of the seven wonders of glass art in the world.
- 2025Project manager Christina Metcalfe asked Dr. Lisa Hollands to recreate the color-changing effect for a public exhibition.
- Oct 25, 2026The Guardian reported on the recreation of the color-changing property of ancient Roman glass.