Glass blowing was invented around 50 BC and revolutionised the production of glass vessels.
Watch Bill Gudenrath, a glass specialist at the Corning Museum of Glass in New York, make a copy of one of the fish-shaped vessels found at Begram, Afghanistan.
This is the first time anyone has tried to replicate it.
See the original glass fish on display in the exhibition Afghanistan: Crossroads of the Ancient World until 17 July 2011.
How to make a glass fish replica