Mold-blown glass is made by blowing hot glass into a mold made of clay, wood, or metal. Watch a glassmaker use a mold with incised designs (footage [1:48] from the Corning Museum of Glass).

Ancient glass makers near Jerusalem discovered they could inflate hot glass to make vessels quickly and more cheaply. Watch this ancient technique of free-blown glass (footage [2:04] from the Corning Museum of Glass). Created by Getty...

Core-formed glass is one of the earliest glassmaking techniques. Watch a glassmaker shape a vessel, add colored trails, handles, and a rim (footage [2:07] from the Corning Museum of Glass).

In this video [2:51] watch a glassmaker create a mosaic glass bowl (footage from the Corning Museum of Glass).

Gold glass is made by sealing gold foil between layers of glass. In the 1500s, circular gold glass was found in the walls of ancient Roman tombs (footage from the Corning Museum of Glass).

Ancient Roman cameo glass layers different colors of glass. The top layer is partly cut away to create a design of contrasting color (footage [2:38] from the Corning Museum of Glass).