'It’s magic': scientists rediscover how to make ancient Roman colour-changing glass

Exclusive: Optical engineering that went into 1,600-year-old Lycurgus Cup has baffled experts for centuries

'It’s magic': scientists rediscover how to make ancient Roman colour-changing glass

TL;DR

  • Scientists have replicated the color-changing properties of the 1,600-year-old Roman Lycurgus Cup.
  • The cup changes color from green to red depending on the light source due to embedded gold and silver nanoparticles.
  • Researchers used an ancient recipe derived from a fragment of the original cup.
  • The replica allows for a better understanding of Roman glass-making techniques and the challenges they faced.
  • A contemporary glass sculpture inspired by the Lycurgus Cup and its mythological frieze will be unveiled.
  • The study suggests the Romans may have 'hit the jackpot' in controlling the sensitive color effects.