Chevron bead

Beads A bead is a small, decorative object that is formed in a variety of shapes and sizes of a material such as glass, plastic, or wood, and that is pierced for threading or stringing. Beads range in size from under 1 millimetre (0.039 in) to over 1 centimetre (0.39 in) in diameter. A pair of beads made from Nassarius sea snail shells, approximately 100,000 years old, are thought to be the earliest known examples of jewellery.[1][2] Beadworkis the art or craft of making things with beads. Beads can be woven together with specialized thread, strung onto thread or soft, flexible wire, or adhered to a surface (e.g. fabric, clay)

Types of beads Beads may be divided into several types of overlapping categories based on different criteria such as the materials from which they are made, the process used in their manufacturing, the place or period of origin, the patterns on their surface, or their general shape. In some cases, such asmillefiori and cloisonné beads, multiple categories may overlap in an interdependent fashion.

Synthetic materials[edit]

Swarovski crystal beads (6 mm–8 mm), pendant 3 cm

Fusible plastic beads

Swedish patent 217875: The plastic bead pegboard (1962). The oldest-surviving synthetic materials used for beadmaking have generally been ceramics: pottery and glass. Beads were also made from ancient alloys such as bronze and brass, but as those were more vulnerable to oxidation they have generally been less well-preserved at archaeological sites. Many different subtypes of glass are now used for beadmaking, some of which have their own component-specific names. Lead crystal beads have a high percentage of lead oxide[ambiguous] in the glass formula, increasing the refractive index.

Most of the other named glass types have their formulations and patterns inseparable from the manufacturing process. Small, colourful, fusible plastic beads (some brands are Nabbi, Hama, Perler, and Pyssla) can be placed on a solid plastic-backed peg array to form designs and then melted together with a clothes iron; alternatively, they can be strung into necklaces and bracelets or woven into keychains. Fusible beads come in many colors and degrees of transparency/opacity, including varieties that glow in the dark or have internal glitter; peg boards come in various shapes and several geometric patterns.

Plastic toy beads, made by chopping plastic tubes into short pieces, were introduced in 1958 by Munkplast AB in Munka-Ljungby, Sweden, under the brand Nabbi. Known as Indian beads, they were originally sewn together to form ribbons. The pegboard for bead designs was invented in the early 1960s (patented 1962, patent granted 1967) by Gunnar Knutsson in Vällingby, Sweden, as a therapy for elderly homes; the pegboard later gained popularity as a toy for children.[3] The bead designs were glued to cardboard or Masonite boards and used as trivets. Later, when the beads were made of polyethylene, it became possible to fuse them with a flat iron.

In 2005, Munkplast/Nabbi introduced the Photo Pearls software that converts digital photos to bead designs. Hama beads are made in three sizes: midi (diameter 5 mm), mini (2.5 mm) and maxi (10 mm). Perler beads come in two sizes called classic (5 mm) and biggie (10 mm). Pyssla beads (by IKEA) only come in one size (5 mm). Manufacturing

Modern mass-produced beads are generally shaped by carving or casting, depending on the material and desired effect. In some cases, more specialized metalworking or glassworking techniques may be employed, or a combination of multiple techniques and materials may be used such as incloisonné.

Glassworking[edit]

Pressed glass beads (matte finish with an AB coating)

Fire polished beads (10 millimetres (0.39 in)) with AB coating Most glass beads are pressed glass, mass-produced by preparing a molten batch of glass of the desired color and pouring it into molds to form the desired shape. This is also true of most plastic beads. A smaller and more expensive subset of glass and lead crystal beads are cut into precise faceted shapes on an individual basis.

This was once done by hand but has largely been taken over by precision machinery. "Fire-polished" faceted beads are a less expensive alternative to hand-cut faceted glass or crystal. They derive their name from the second half of a two-part process: first, the glass batch is poured into round bead molds, then they are faceted with a grinding wheel. The faceted beads are then poured onto a tray and briefly reheated just long enough to melt the surface, "polishing" out any minor surface irregularities from the grinding wheel.

Specialized glass techniques and types[edit]

Furnace glass beads There are several specialized glassworking techniques that create a distinctive appearance throughout the body of the resulting beads, which are then primarily referred to by the glass type. If the glass batch is used to create a large massive block instead of pre-shaping it as it cools, the result may then be carved into smaller items in the same manner as stone.

Conversely, glass artisans may make beads by lampworking the glass on an individual basis; once formed, the beads undergo little or no further shaping after the layers have been properly annealed. Most of these glass subtypes are some form of fused glass, although goldstone is created by controlling the reductive atmosphere and cooling conditions of the glass batch rather than by fusing separate components together. Dichroic glass beads incorporate a semitransparent microlayer of metal between two or more layers. Fibre optic glass beads have an eyecatchingchatoyant effect across the grain.

There are also several ways to fuse many small glass canes together into a multicolored pattern, resulting in millefiori beads or chevron beads(sometimes called "trade beads"). "Furnace glass" beads encase a multicolored core in a transparent exterior layer which is then annealed in a furnace. More economically, millefiori beads can also be made by limiting the patterning process to long, narrow canes or rods known as murrine. Thin cross-sections, or "decals", can then be cut from the murrine and fused into the surface of a plain glass bead. Shapes[edit]

Hair pipe beads[edit] Elk rib bones were the original material for the long, tubular hair pipe beads.[4] Today these beads are commonly made of bison and water buffalo bones and are popular for breastplates and chokers amongPlains Indians. Black variations of these beads are made from the animals' horns. Seed beads[edit]

Main article: Seed bead Seed beads are uniformly shaped spheroidal or tube shaped beads ranging in size from under a millimetre to several millimetres. "Seed bead" is a generic term for any small bead. Usually rounded in shape, seed beads are most commonly used for loom and off-loom bead weaving.

Place or period of origin

Carved Cinnabar lacquer beads African trade beads or slave beads may be antique beads that were manufactured in Europe and used for trade during the colonial period, such as chevron beads; or they may have been made in West Africa by and for Africans, such as Mauritanian Kiffa beads, Ghanaian and Nigerian powder glass beads, or African-made brass beads. Austrian crystal is a generic term for cut lead-crystal beads, based on the location and prestige of the Swarovski firm. Czech glass beads are made in the Czech Republic, centralized around an area called Jablonec nad Nisou.

Production of glass beads in the area dates back to the 14th century, though production was depressed under communist rule. Because of this long tradition, their workmanship and quality has an excellent reputation. Vintage beads, in the collectibles and antique market, refers to items that are at least 25 or more years old. Vintage beads are available in materials that include lucite, plastic, crystal, metal and glass.

Symbolic meaning of beads

In many parts of the world, beads are used for symbolic purposes, for example: use for prayer - e.g. rosary beads use for anti-tension devices, e.g. worry beads use as currency e.g. Aggrey beads from Ghana use for gaming e.g. owari beads for mankala Greek komboloi beads as in Crete