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

Parcioffi
Glass Dictionary Term

(Italian) Jacks with blades made of wood. Parcioffis Parchioffi

Opus sectile
Glass Dictionary Term

(from Latin, “cut work”) Decoration on a wall or floor, made by fitting together flat elements of different shapes and colors. The ancient Romans sometimes used glass to make opus sectile ornament. Opus sectiles Opus-sectile Opus-sectiles Opus Sectile

Ormolu
Glass Dictionary Term

(from French, “ground gold”) An alloy with a copper base, used for decoration. Some glass objects have ormolu mounts. ormalou ormalo Ormolu and Blue Opaline Clock

Overblow
Glass Dictionary Term

A by-product of mold blowing, this is the portion of the parison that remains outside the mold. The overblow, or moil, is usually removed by cracking off. over-blow overblows over-blows Moil

Overlay
Glass Dictionary Term

A layer of glass that covers a layer of a different color, often as the result of casing or flashing. overlays over-lay over-lays overlaying over-laying Red/Amber Sliced Descending Form

Pallet
Glass Dictionary Term

A glassworker’s tool consisting of a square piece of wood or metal and a handle. It is used to flatten the bases of vessels. pallets

Omphalos bowl
Glass Dictionary Term

(from Greek omphalos, “navel”) A bowl with a hollow, raised boss (the “navel”) at the center. Omphalos bowls omphalo bowl omphalo bowls Shallow Bowl (Phiale)

Opal glass
Glass Dictionary Term

Glass that resembles an opal, being translucent and white, with a grayish or bluish tinge. opal glasses opal-glass Opal Glass Beaker

Opalescent glass
Glass Dictionary Term

(1) A type of late 19th-century Art Glass, made by covering a gather of colored glass with a layer of colorless glass containing bone ash and arsenic or the mineral cryolite from Greenland. The parison was inflated in a mold to produce raised decoration. When the parison was reheated, the raised

Openwork
Glass Dictionary Term

Work that is perforated. Openwork in glass objects can be made by creating a network of trails, by casting (see Diatreta), or by cutting (see Cage cup). open-work openworks Grand Double Helix Diatreta

Optical glass
Glass Dictionary Term

Glass of extreme purity and with welldefined optical properties, which was originally created for making lenses and prisms. optical glasses Astrolabe

Nipt-diamond-waies
Glass Dictionary Term

The technique of manipulating adjacent vertical ribs with pincers to form a diamond pattern. “Nipt-diamond-waies” was the term used by the English glassmaker George Ravenscroft (1632-1683) in a 1677 advertisement for his new lead glass. nipt diamond waies nipt diamond waie nipt-diamond-waie Rummer

Nuppenbecher
Glass Dictionary Term

(German, “drop beaker”) A beaker decorated with large, droplike prunts, which may be drawn out into pointed projections. nuppenbechers nupenbecher nupenbechers Nuppenbecher or Krautstrunk (prunted beaker)

Obsidian
Glass Dictionary Term

A volcanic mineral that was the first form of natural glass used by humans. It is usually black, but it can also be very dark red or green; its splinters are often transparent or translucent. obsidians

Oenochoe
Glass Dictionary Term

(from Greek, “wine pourer”) A pitcher with a trefoil mouth, used in ancient Greece to transfer wine from the mixing bowl to the cup. Between the sixth and third centuries B.C., miniature core-formed oenochoes were used as perfume bottles. Oenochoes Pitcher with Trefoil Mouth

Omom
Glass Dictionary Term

(perhaps from Arabic qumqum, “sprinkler”) A sprinkler with a tall, narrow neck and an oblate spheroid body. Omoms were used in the Islamic world for sprinkling perfume. omoms omam omams

Nef
Glass Dictionary Term

(from Old French nef, “ship”) A table ornament in the form of a ship, with the hull formed by blowing and the rigging consisting of trails. Sometimes, there is a spout in the hull. nefs Nef in the form of a Boat

Neoclassical
Glass Dictionary Term

A style of art, architecture, literature, music, etc., that is based on, or influenced by, classical styles, especially the styles of ancient Greece and Rome. neo-classical neoclasical Venus and Cupid

Neon
Glass Dictionary Term

Neon is an inert gas that, like some other gases, has the properties of high electrical conductivity and strong light-emissive power. Such gases can be introduced into evacuated glass tubes. Under these conditions, an electrical discharge causes the gas to emit light. Different gases emit different

Network mosaic glass
Glass Dictionary Term

Hellenistic and Roman glass composed of spirally wound canes, usually colorless and white or yellow, that are fused to create an overall pattern with a lacy appearance; %%lacy mosaic glass%% hence the alternative name. network-mosaic glass network mosaic glasses Lacy mosaic glass

Newel
Glass Dictionary Term

Usually, the post at the head and the foot of a flight of stairs, supporting the handrail. In the 19th century, glass finials were sometimes used to adorn newel posts. newals newels newal newel post newel posts Newel Post

Mosque lamp
Glass Dictionary Term

An Islamic lamp shaped like an inverted bell, with three or more handles from which it was suspended by chains. Many mosque lamps have gilded and enameled decoration, which often includes inscriptions naming the donor and quoting verses from the Koran. mosque lamps Vase in the form of a Mosque Lamp

Moss Agate
Glass Dictionary Term

A variety of Art Glass developed by John Northwood (1836-1902) and Frederick Carder (1863- 1963) in England in the late 1880s. It was made by casing a parison of soda-lime glass with colorless lead glass, then covering it with powdered glass of several colors, and casing it again with lead glass.

Muff
Glass Dictionary Term

A glass cylinder intended to be cut into sheets. muffs Cylinder glass

Muffle
Glass Dictionary Term

A fire-clay box in which glass (or porcelain) objects are enclosed, when placed in the muffle kiln, to protect them from the flames and smoke while they are subjected to low-temperature firing, especially in the process of firing enamels and gilding at temperatures of about 950°-1300°F (500°-700°C)

Muffle kiln
Glass Dictionary Term

A low-temperature kiln for refiring glass to fuse enamel, fix gilding, and produce luster. muffle kilns Kiln

Murrhine
Glass Dictionary Term

(from Latin murra, apparently the name of a mineral from which costly vessels [vasa murrina] were made) The English adjective “murrhine” and the Italian adjective “murrino” are sometimes applied to ancient Roman mosaic glass. It is probable, however, that vasa murrina were made from a semiprecious

Murrina
Glass Dictionary Term

These terms are used inconsistently, especially in the context of contemporary glass. When used as a noun, murrina usually refers to a multicolored element embedded in an object, whereas murrine most often refers to slices of a complex cane. murrini murinas murrinas murrines Murrine murine murina

Nappy
Glass Dictionary Term

In the United States, a small serving dish. nappies nappys Cut Nappy

Natron
Glass Dictionary Term

Sodium sesquicarbonate, originally obtained mainly from the Wadi el-Natrun, northwest of Cairo. It was commonly used by Roman glassmakers as the alkali constituent of batch.

Pages