Biconical millefiori mosaic bead

Biconical millefiori mosaic bead
Period:
Dating:0 AD–1900 AD
Origin:Mediterranean Basin,
Material:Glass (all types)
Physical:2.8cm. (1.1 in.) - 15 g. (.5 oz.)
Catalog:GLS.VS.00995

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  This millefiori bead was assembled by fusing about 30 millefiori cane sections onto a biconical base bead. The arrangement of the flowers is very irregular, with much dragging, much crowding in places, and bare patches exposing the base bead. Each “flower” comprises alternating blue and white petals around a red center. Within the red center is an “inner flower” in opaque yellow with a round center and six petals. Possibly eastern Mediterranean 1-400 AD, or Venetian much later.

The meticulous detailing of the cane sections is in stark contrast with the slipshod assembly job, suggesting that the bead may have been formed from cane sections produced by a different person or workshop. Spaer (2001:142) notes: “The rod-formed, cane-wound Venetian beads were manufactured a lume (at the lamp) over a single, concentrated flame fueled by tallow, oil, or gas (depending on the period), while the glass components (an array of monochrome and multicolored canes) were premanufactured by other craftsmen.”

Parallel
Ernesto Wolf collection #220. “Biconical mosaic glass bead, eastern Mediterranean, possibly from a workshop on the north coast of the Black Sea, perhaps first century, possibly fourth century CE. Translucent dark brown appearing black, inlaid with opaque white, ‘black,’ brick red, and opaque yellow. Wound around a tapered mandril. . . Biconical bead with longitudinal threadhole. At greatest circumference, a polychrome zone composed of six and a half slices of mosaic glass bordered on each side by a tri-colored twisted thread of opaque white, brick red and ‘black’; each mosaic slice has a brick red center with three yellow dots surrounded by ‘black’ and white rays” (Stern 2001:387).

Millefiori beads
The loose term ‘millefiori’ (a thousand flowers) covers any repeating radially symmetrical (hence flower-like) motif made with mosaic glass. It does not have to be flowers, and could have been called “millecalamari” if Venetian glassmakers who coined the term had been more fond of squid.

Spaer (2001:120-1) writes: “The basic beads are mostly rod-formed, wound, and have applied cane section of one or more kinds. The simple concentric patterns without stripes were produced at various times, while patterns with radiating stripes only became really common some time into the Roman period.”

Mosaic glass
The concept of mosaic glass encompasses a range of techniques that all involve arranging glass of different colors together, with sufficient heat to cause fusing of the glass but not so much that the colors mix. When this mosaic concept is used together with the drawing techniques made possible by the ductility of glass, the initial arrangement is miniaturized.

The manufacture of twisted or reticella canes is a simple example of mosaic glass and drawing principles. Stern and Shlick-Nolte (1994:54) explain: “The craftsman could make [twisted canes] by heating two or three monochrome canes and twisting them. A method now common is to pick up, one after the other, two or three chunks of color of roughly the same size and to shape them in a cone. Because the glassworker rotates the cone while he draws the glass, the colors twist around each other. . . Reticella cane is drawn from a hot cone-shaped bit of glass in the same manner as for monochrome cane, but before the glass is drawn, the glassworker marvers [to marver: to press or roll softened glass on a smooth surface to smooth it or to consolidate applications] one or more monochrome canes of contrasting color into the surface of the cone. . . Depending on the placing of the canes on the cone and the speed with which the cone is rotated, intricate lace patterns can be achieved. . .

Making canes with concentric colors, called ‘overlay cane,’ such as is used in mosaic eye beads, requires a completely different method. Again, Stern and Shlick-Nolte (1994:56) explain: “To make an overlay cane, one works from the center out, applying layers of glass for each ring of color. First, a chunk of preheated glass is softened and shaped into a cylinder for the core or center of the design. A second chunk or bit of contrasting color is heated on a second metal rod, shaped, and applied to the cylinder on the first tool. There are various ways to do this. . . 1. A trail is wound spirally around the cylinder. . . 2. A thick trail is draped lengthwise onto the cylinder and pinched off at the end of the cylinder, then a second trail is applied next to the first, and so forth until the whole cylinder is covered with trails of color. . . 3. the chunk of glass on the second tool is shaped into an inverted cone, fused to the cylinder on the first tool, and then the inverted cone is separated from the second tool and marvered onto the cylinder. . . When all the colors have been applied, a thick cylinder results that is heated thoroughly and lengthened (drawn). . .”

Mosaic bars with patterns such as rosettes or faces were achieved by ‘cold bundling’ in which pre-made bars or chunks are arranged when cold, bundled, and heated until the glass fuses. In the case of mosaic bars, the fused glass is shaped by marvering, and then drawn to miniaturize the design. Slices are obtained from the bars, which can then be used as inlays.

Mosaic glass appears to have been invented in Egypt, and Egyptian craftsmen remained masters of this technique, which became common during the first century BC.


Bibliography (for this item)

Spaer, Maud
2001 Ancient glass in the Israel Museum: beads and other small objects. The Israel Museum, Jerusalem. (142)

Stern, E. Marianne
2001 Roman, Byzantine, and Early Medieval Glass; 10 BCE-700 CE; Ernesto Wolf Collection. Hatje Cantz Publishers, Ostfildern-Ruit, Germany. (387)



Bibliography (on Millefiori beads)

Spaer, Maud
2001 Ancient glass in the Israel Museum: beads and other small objects. The Israel Museum, Jerusalem. (120)



Bibliography (on Mosaic glass)

Stern, E. Marianne, and Birgit Schlick-Nolte
1994 Early Glass of the Ancient World 1600 BC - AD 50 Ernesto Wolf Collection. Gerd Hatje, Ostfildern, Germany.






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