Cased glass, frequently known as lining, plating or flashing, was not new in the nineteenth century, but that is the time period in which it became very popular. This type of glass is still in demand and continues to be one of the techniques that many glassblowers use today.
Cased glass is identified as a glass piece that has two or more layers of different colors. The inner or outer layers of this glass can also be clear. You can view cased glass by peering inside a piece, such as a bowl or cup, and seeing a different color. In some instances, the outer layer of cased glass can be cut away in sections to bring out the color(s) of the previous casings beneath.
Cased glass is created in a couple of ways. One method involves blowing a new color inside of a piece that has already been created. Another process entails layering different colored glasses over each other. In each technique, the multiple layers of glasses are fused and blown out together to form the cased glass.
The Portland Vase is one of the first examples of cased and cameo glass. This piece dates between the end of the first century B.C. and the beginning of the first century A.D. It was created during the rule of the first Roman emperor, Augustus Caesar.
Cased glass is commonly found in forms such as lamps, vases and scent bottles. You can still find this category of glass for sale in galleries or online venues, such as eBay. Other common configurations include light sconces, perfume bottles, and pendants.
There were significant time periods in which cased glass was introduced to other countries. In 1804, cased glass originated in Bohemia and continued in France in 1825. Shortly thereafter, Britain's glassblowers followed suit and began casing glass in 1844.