All About Glass

All About Glass

This is your resource for exploring various topics in glass: delve deeper with this collection of articles, multimedia, and virtual books all about glass. Content is frequently added to the area, so check back for new items. If you have a topic you'd like to see covered, send us your suggestion. If you have a specific question, Ask a Glass Question at our Rakow Research Library.

Laboratory Studies of Some Glasses from Vergina
Article

Colorless Glasses in Antiquity Most glass objects of the second and first millennia B.C. were strongly colored, as are the precious stones they were meant to imitate. Those that were not intentionally colored usually had a pronounced greenish tint, owing to the presence of iron impurities

An Inlaid Glass Plate in Athens: Laboratory Examination
Article

Introduction In recent years it has become apparent that laboratory examinations of ancient glass might provide archaeologists and historians with valuable information about both ancient glass and the history of technology. At present several scientists working in this field are developing those

Scientific Investigations of Some Glasses from Sedeinga
Article

In 1973, Prof. Jean Leclant described the glass excavated at Sedeinga, a meroitic site in Sudan. 1 Among the objects are two extremely important footed flutes bearing elaborate "painted, and gilded polychrome decorations. Professor Leclant dated the tombs in which the glasses were uncovered to

An Observation on the Corinth Diatretum
Article

A great deal of attention has been directed toward understanding how Roman vasa diatreta were made. 1 Many of those who have handled the objects are convinced that they were made by deep cutting and undercutting heavy-walled blanks. Others have proposed explanations which require that the posts

The Chemical Composition of a Faience Bead from China
Article

During the past few years, there has been a vigorous renewal of interest in the study of ancient Chinese glass. This has been prompted largely by recent archaeological finds and by the availability of new scientific laboratory techniques for studying glass objects. Research in the past decade by

The Use of Equilibrated Silica Gel for the Protection of Glass with Incipient Crizzling
Article

In a previous publication 1 we have discussed glasses showing incipient crizzling, that is, glasses in the earliest stages of crizzling. This condition threatens many pieces of European, East Asiatic, and American glasses manufactured between the seventeenth and nineteenth centuries. Examples exist

Stained Glass from Saint-Jean-des-Vignes (Soissons) and Comparisons with Glass from Other Medieval Sites
Article

The abbey of Saint-Jean-des-Vignes has dominated the urban landscape of the northern French city of Soissons since the 11th century. 1 Formally established in 1076, the abbey was built, rebuilt, sacked, and restored from its founding to the present day. In its Gothic phase, the church measured more

Chemical Analyses of Amelung Glasses
Article

Introduction Chemical analyses and laboratory studies of glasses from the ancient and medieval worlds have provided a great deal of useful information for archaeologists, curators, and historians, 1 but until now, few such studies have been carried out on glasses from more recent periods. One

Does Glass Flow?
Article

(No, It Doesn't Flow—read on for details) Early one spring morning in 1946, Clarence Hoke was holding forth in his chemistry class at West Side High School in Newark, New Jersey. "Glass is actually a liquid." the North Carolina native told us in his soft Southern tones. "You can

Underwater Archeology
Video

Between 1984 and 1994 the Institute of Nautical Archaeology (INA) excavated the remains of a Late Bronze Age shipwreck in the Mediterranean Sea. The ship's cargo consisted primarily of raw materials, including glass. Learn about archeology underwater: www.cmog.org Courtesy of Institute of