The Lycurgus Cup, made from glass, appears red in transmitted light and green in reflected light. The glass contains 70nm particles as seen in an electron microscopic image. The cup itself is dated to 4th century AD, but the metallic holder is a later addition.
It is now in the British Museum and is made of "dichroic" glass. It is also a rare example of a complete Roman cage cup- where the glass has been ground and cut to leave only a decorative cage at the surface level. It is the only cage cup, unlike others with abstract geometric designs, which has composite figures. It shows the mythical king Lycurgus trying to kill Ambrosia, a follower of the god Dionysus.
|Photographed with Flash|
|Photographed under normal lighting|