Roman Glassmaking: The Secret Ingredients Behind the Dichroic Lycurgus Cup
alyzza may
Roman Glassmaking: The Secret Ingredients Behind the Dichroic Lycurgus Cup The Lycurgus Cup, dating to the 4th century CE, is one of the most spectacular surviving artifacts of the Roman world. It is the only intact example of a complete Roman "cage cup" ( diatretum ) that exhibits dichroic properties—meaning it changes color depending on the direction of the light. 1. The Phenomenon of Dichroic Glass The most striking feature of the Lycurgus Cup is its ability to shift colors based on the light