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