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.

Pages

Stippling
Glass Dictionary Term

(1) The technique of tapping the surface of a glass object with a pointed tool, often with a diamond or tungsten-carbide tip. Each tap produces a mark, and the decoration is composed of many hundreds or thousands of marks. (2) On lacy-pattern glass, the stippling is part of the decoration of the

Stirrup cup
Glass Dictionary Term

(1) A cup of wine or some other drink handed to a person when on horseback and about to set out on a journey; hence (2) a drinking vessel for consuming such drinks. stirrup cups stirrup-cup stirrup-cups Stirrup Glass

Stone
Glass Dictionary Term

Any crystalline inclusion present in glass. Stones consist of unmelted particles of batch, fragments of refractory material from the pot, or devitrification crystals. Stones of the first two varieties are generally irregular but rounded; those of the third variety are angular and well formed.

Strain cracks
Glass Dictionary Term

Fissures in the body of a vessel caused by internal strain resulting from inadequate annealing and/or accidental thermal shock. strain crack strain cracking

Strigil
Glass Dictionary Term

(from Latin strigilis, “scraper”) A scraper used by the ancient Romans to remove impurities from the skin after bathing. Although strigils were usually made of metal, a few glass examples are known to exist. strigils Strigil

Spill holder
Glass Dictionary Term

A tall, narrow vessel for spills. Spills are thin strips of wood, or folded or twisted pieces of paper, used for lighting candles, pipes, etc. spill holders spill-holder Taperstick

Spoon holder
Glass Dictionary Term

A tall, narrow container for spoons. Spoon holders were used at the table from the mid-19th century to World War I. spoon holders spoon-holder Spoon Holder in "Horn of Plenty" or "Comet" Pattern

Sport cup
Glass Dictionary Term

A first-century A.D. Roman mold-blown drinking vessel decorated with fighting gladiators or a chariot race. sport cups sport-cup sport-cups sports cup sports cups Sports Cup Depicting Gladiators

Sprinkler
Glass Dictionary Term

A vessel with a narrow neck, sometimes with a diaphragm at the bottom, that causes the contents to emerge drop by drop. sprinklers Sprinkler

Stained glass
Glass Dictionary Term

The generic name for decorative windows made of pieces of colored glass fitted into cames and set in iron frames. Strictly speaking, the term is inaccurate because, in addition to glass colored by staining, glaziers used, and continue to use, glass colored throughout by metallic oxide, glass

Staining
Glass Dictionary Term

In glassworking, the process of coloring the surface of glass by the application of silver sulfide or silver chloride, which is then fired at a relatively low temperature. The silver imparts a yellow, brownish yellow, or ruby-colored stain, which can be painted, engraved, or etched. Drinking Horn

Stangenglas
Glass Dictionary Term

(German, “pole glass”) A tall, narrow cylindrical drinking vessel (hence the name “pole glass”), usually with a pedestal foot. stangenglases stangenglass Tall Beaker (Stangenglas)

Stem
Glass Dictionary Term

The narrow part of a goblet or tazza that separates the bowl and the foot. stems Goblet

Stemware
Glass Dictionary Term

The collective name for drinking vessels and serving dishes with a stem supporting the bowl. stemwares stem-ware stem ware stem-wares stem wares 2 Wineglasses in "Persian" Pattern

Stick lighting
Glass Dictionary Term

The process of using a point to scratch internal details in painted or enameled decoration. stick lightings stick light stick-light stick lit stick-lit Stickwork stick-work stickworks stick worked stick-worked stick-works stickworking stick-working stick works

Soda
Glass Dictionary Term

Sodium carbonate. Soda (or alternatively potash) is commonly used as the alkali ingredient of glass. It serves as a flux to reduce the fusion point of the silica when the batch is melted. sodas

Soda-lime glass
Glass Dictionary Term

Historically, the most common form of glass. It contains three major compounds in varying proportions, but usually silica (about 60-75 percent), soda (12-18 percent), and lime (5-12 percent). Soda-lime glasses are relatively light, and upon heating, they remain plastic and workable over a wide

Soffietta
Glass Dictionary Term

(Italian) A tool used as a puffer to further inflate a vessel after it has been removed from the blowpipe and is attached to the pontil. It consists of a curved metal tube attached to a conical nozzle. The glassblower reheats the vessel, inserts the nozzle into its mouth so that the aperture is

Soft glass
Glass Dictionary Term

A generic name for glass (e.g., soda-lime glass) with a relatively high coefficient of expansion. The term hard glass (e.g., borosilicate glass) refers to glass with a relatively low coefficient of expansion. soft glasses soft-glass soft-glasses

Spechter
Glass Dictionary Term

(German) A drinking glass made in the Spessart region of Germany in the 16th century. Although the term is frequently applied to a tall glass resembling a Stangenglas, there is no proof that the usage is correct. spechters speckter speckters

Scyphus
Glass Dictionary Term

A cup with a foot and two opposed handles. scyphuses scyphi

Slumping
Glass Dictionary Term

The process of reheating a blank until it becomes soft and gradually flows under its own weight over or into a former mold and eventually assumes the shape of the mold. Soda-lime glass becomes soft at about 1110°F (600°C). Slumping is also known as sagging. slump slumped slumps sagged Sagging Dish

Smalt
Glass Dictionary Term

Colored glass, often deep blue glass colored with cobalt oxide. Smalts are finely ground to use as colorants for glass and enamel. smalts

Snake-thread decoration
Glass Dictionary Term

A type of decoration that consists of trails applied in sinuous patterns. It was made by the Romans between the second and fourth centuries A.D. snake-thread decorations snake-thread-decoration snake thread decoration snake thread decorations Goblet with Snake-Thread Decoration

Snuff bottle
Glass Dictionary Term

A small bottle (in China) or box (in Europe) for powdered tobacco, or snuff. The habit of inhaling snuff, which spread to Europe from the Americas in the 17th century, was introduced to China in the 18th century. snuff bottles snuff-bottle snuff-bottles snuffbox snuffboxes snuff box snuff boxes

Shearings
Glass Dictionary Term

Slivers of waste glass formed by trimming glassware during manufacture. sheerings clippings cuttings

Shears
Glass Dictionary Term

A tool used to trim excess hot glass from an object in the course of production. Many modern shears are embedded with chips of industrial diamonds. sheers

Shot glass
Glass Dictionary Term

A small drinking glass used to serve a single measure (shot) of liquor, usually whiskey. shot glasses shot-glass Tortoise Old-Fashioned

Sidonian glass
Glass Dictionary Term

A popular generic name for numerous first-century A.D. Roman mold-blown vessels. It is not known how many of these objects were actually made at Sidon, a city on the coast of Lebanon. Sidonian glasses Beaker

Silica
Glass Dictionary Term

Silicon dioxide, a mineral that is the main ingredient of glass. The most common form of silica used in glassmaking has always been sand. silicas

Pages