Wednesday, September 5, 2007


Jewellery has been used for a number of reasons:
Currency, wealth display and storage,
Functional use (such as clasps, pins, and buckles)
Symbolism (to show membership or status)
Protection (in the form of amulets and magical wards),

Artistic display
Most cultures have at some point had a practice of keeping large amounts of wealth stored in the form of jewellery. Numerous cultures move wedding dowries in the form of jewellery, or create jewellery as a means to store or display coins. Alternatively, jewellery has been used as a currency or trade good; an example being the use of slave beads.

Many items of jewellery, such as brooches and buckles originated as purely functional items, but evolved into decorative items as their functional requirement diminished.


Jewellery can also be symbolic of group membership, as in the case of the Christian crucifix or Jewish Star of David, or of status, as in the case of chains of office, or the Western practice of married people wearing a wedding ring.
Wearing of amulets and devotional medals to provide protection or ward off evil is common in some cultures; these may take the form of symbols (such as the ankh), stones, plants, animals, body parts (such as the Khamsa), or glyphs (such as stylized versions of the Throne Verse in Islamic art).Although artistic display has clearly been a function of jewellery from the very beginning, the other roles described above tended to take primacy. It was only in the late 19th century, with the work of such masters as Peter Carl Fabergé and René Lalique, that art began to take primacy over function and wealth.


In creating jewellery, gemstones, coins, or other precious items are often used, and they are typically set into precious metals. Alloys of nearly every metal known have been encountered in jewellery -- bronze, for example, was common in Roman times. Modern jewellery usually includes gold, white gold, platinum, palladium, or silver. Most American and European gold jewellery is made of an alloy of gold, the purity of which is stated in karats, indicated by a number followed by the letter K. American gold jewellery must be of at least 10K purity (41.7% pure gold), (though in England the number is 9K and is typically found up to 18K (75% pure gold). Higher purity levels are less common with alloys at 22 K (91.6% pure gold), and 24 K (99.9% pure gold) being considered too soft for jewellery use in America and Europe. These high purity alloys, however, are widely used across Asia, the Middle East, and Africa.[citation needed] Platinum alloys range from 900 (90% pure) to 950 (95.0% pure). The silver used in jewellery is usually sterling silver, or 92.5% fine silver.
Other commonly used materials include glass, such as fused-glass or enamel; wood, often carved or turned; shells and other natural animal substances such as bone and ivory; natural clay; polymer clay; and even plastics. However, any inclusion of lead or lead solder will cause an English Assay office (the building which gives English jewellery its 'stamp of approval, the Hallmark) to destroy the piece.

Contemporary bead embroidery design.
Beads are frequently used in jewellery. These may be made of glass, gemstones, metal, wood, shells, clay and polymer clay. Beaded jewellery commonly encompasses necklaces, bracelets, earrings, and belts. Beads may be large or small, the smallest type of beads used are known as seed beads, these are the beads used for the "woven" style of beaded jewellery. Another use of seed beads is an embroidery technique where seed beads are sewn onto fabric backings to create broad collar neck pieces and beaded bracelets. Bead embroidery, a popular type of handwork during the Victorian era is enjoying a renaissance in modern jewellery making.
Advanced glass and glass beadmaking techniques by Murano and Venetian glassmasters developed crystalline glass, enameled glass (smalto), glass with threads of gold (goldstone), multicoloured glass (millefiori), milk-glass (lattimo) and imitation gemstones made of glass. As early as the 13th century, Murano glass and Murano beads were popular.Silversmiths, goldsmiths, and lapidaries methods include forging, casting, soldering or welding, cutting, carving, and "cold-joining" (using adhesives, staples, and rivets to assemble parts).


Diamonds


A selection of diamonds.
Main article: Diamond
Diamonds, long considered the most prized of gemstones, were first mined in India.Pliny may have mentioned them, although there is some debate as to the exact nature of the stone he referred to as Adamas; In 2005, Australia, Botswana, Russia and Canada ranked among the primary sources of gemstone diamond production.The British crown jewels contain the Cullinan Diamond, part of the largest gem-quality rough diamond ever found (1905), at 3,106.75 carats (621.35 g). Now popular in engagement rings, this usage dates back to the marriage of Maximilian I to Mary of Burgundy in 1477.
Other gemstones
Main article: Gemstone
Although diamonds are considered the most prized of all gemstones, many other precious stones are used for jewellery. Some gems, for example, amethyst, have become less valued as methods of extracting and importing them have progressed. Some man-made gems can serve in place of natural gems, an example is the cubic zirconia, used in place of the diamond. Metal finishes


Bangle with a high-polish finish.


Bangle with a hammered finish.
For platinum, gold, and silver jewellery there are many different techniques to create different finishes. The most common however are: high-polish, satin/matte, brushed, and hammered. High-polished jewellery is by far the most common and gives the metal the highly-reflective and shiny look. Satin, or matte finish reduces the shine and reflection of the jewellery and is commonly used to accentuate gemstones such as diamonds. Brushed finishes give the jewellery a textured look, and are created by brushing a material (similar to sandpaper) against the metal, leaving 'brush strokes'. Hammered finishes are typically created by using a soft, rounded hammer and hammering the jewellery to give it a wavy texture.
Impact on society
Jewellery has been used to denote status. In ancient Rome, for instance, only certain ranks could wear rings; later, sumptuary laws dictated who could wear what type of jewellery; again based on rank. Cultural dictates have also played a significant role; for example, the wearing of earrings by Western men was considered "effeminate" in the 19th and early 20th centuries.
Conversely, the jewellery industry in the early 20th century launched a campaign to popularize wedding rings for men — which caught on — as well as engagement rings for men - which did not, going so far as to create a false history and claim that the practice had Medieval roots. By the mid 1940s, 85% of weddings in the U.S. featured a double-ring ceremony, up from 15% in the 1920s.Religion has also played a role: Islam, for instance, considers the wearing of gold by men as a social taboo, and many religions have edicts against excessive display.