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Jewelry Information...
Materials and methods
Anticlastic forged sterling bracelet.
In creating jewelry, 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 jewelry
-- bronze,
for example, was common in Roman times. Modern jewelry usually includes gold, white
gold, platinum, palladium,
or silver.
Most American and European gold jewelry 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 jewelry
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 jewelry 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 jewelry 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 jewelry its 'stamp of approval,
the Hallmark)
to destroy the piece.[citation
needed]
Beads are frequently
used in jewelry. These may be made of glass, gemstones, metal, wood,
shells, clay and polymer clay. Beaded
jewelry 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
jewelry.
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.[citation
needed] As early as the 13th century, Murano
glass and Murano
beads were popular.[citation
needed]
Silversmiths, goldsmiths,
and lapidaries methods
include forging, casting, soldering or welding,
cutting, carving,
and "cold-joining" (using adhesives, staples,
and rivets to
assemble parts).[4]
Diamonds
Diamonds, long considered the most prized of gemstones, were first mined in India.[citation
needed] Pliny may have mentioned them, although there is some debate
as to the exact nature of the stone he referred to as Adamas;[5] Currently,
Africa, Australia, and Canada rank among the primary sources.[verification
needed]
The British
crown jewels contain the Cullinan
Diamond, part of the largest gem-quality rough diamond ever found (1905),
at 3,106.75 carats.
Now popular in engagement
rings, this usage dates back to the marriage of Maximilian
I to Mary
of Burgundy in 1477.
Other
gemstones
Gemstone
Although diamonds are considered the most prized of all gemstones, many other
precious stones are used for jewelry. 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.[6]
Metal
finishes
Bangle
with a high-polish finish. Bangle with a hammered finish.
Art Deco
Growing political tensions, the aftereffects of the war, and a general reaction against the perceived decadence of the turn of the century led to simpler forms, combined with more effective manufacturing for mass production of high-quality jewelry. Covering the period of the 1920s and 1930s, the style has become popularly known as Art Deco. Walter Gropius and the German Bauhaus movement, with their philosophy of "no barriers between artists and craftsmen" lead to some interesting and stylistically simplified forms. Modern materials were also introduced: plastics and aluminum were first used in jewelry, and of note are the chromed pendants of Russian born Bauhaus master Naum Slutzky. Technical mastery became as valued as the material itself; in the west, this period saw the reinvention of granulation by the German Elizabeth Treskow (although development of the re-invention has continued into the 1990s)..
Jewish jewelry
In the Jewish culture jewelry have played an important role since biblical times. We could see many references in the bible to the custom of wearing jewelry both as a decoration and as a symbol. In recent times, Jewish jewelry are wildly spread and are worn to show one's affiliation with the religion and as talismans and amulets.
The Star of David ("Magen David" in Hebrew) is the symbol most recognized with Judaism. It was used in land of Israel in Roman times, but it seems to have become associated with Judaism in particular only in later centuries. In the 17th century It became a popular practice to put Star of David on the outside of synagogues, to identify them as Jewish houses of worship; however, it is not clear why this symbol was selected for this. Today the Star of David is a universally recognized symbol of Jews. It appears on the flag of the state of Israel, and the Israeli equivalent of the Red Cross is known as "the Magen David Adom" ("Adom" is red in Hebrew). Indeed, one of the most common symbols in Jewish jewelry is the Star of David, equivalent to wearing a cross by Christians.
Another popular symbol used in Jewish jewelry is the Hamsa, also known as the "Hamesh hand". The Hamsa appears often in a stylized form, as a hand with three fingers raised, and sometimes with two thumbs arranged symmetrically. Its five fingers are said to symbolize the five books if the Torah. The symbol is used for protection and as a mean to ward of the Evil eye in amulets and charms and can also be found in various places such as home entrances and cars. It is also common to place other symbols in the middle of the Hamsa that are believed to help against the evil eye such as fish, eyes and the Star of David. The colour blue, or more specifically light blue, is also considered protective against the evil eye and we could see many Hamsas in that colour or with embedded gemstones in different shades of blue. Hamsas are often decorated with Jewish prayers of a protective fashion such as the Sh'ma Prayer, the Birkat HaBayit (Blessing for the Home), or the Tefilat HaDerech (Traveler's Prayer).
The Chai symbol, popularly worn on necklaces, is simply the Hebrew word "Chai" (literally means 'living'), consisting of the two Hebrew letters Chet and Yod. This word refers to the Living G-d. According to the gematrian system, the letters of Chai add up to 18. There have been many mystical numerological speculations about this fact and the custom to give donations and monetary gifts in multiples of 18 as a blessing for long life is very common in Jewish circles.
Other motives commonly found in Jewish jewelry are symbols from the Kabbalah (also known as kabala, cabala) such as the Merkaba, a three-dimensional Star of David, and the Tree of life. Many pieces of jewelry are decorated with parts or initials of known Jewish prayers and with 3-letters combinations, believed to represent different names of the Jewish God.
Asia
Jewelry making in Asia started in China 5,000 years ago and in the Indus Valley region later on. With roots set deep in religious designs, Asian jewelry was very decorative and used most often in ceremonies.
China
The earliest culture to begin making jewelry in Asia was the Chinese around 5,000 years ago. Chinese jewelry designs were very religion-orientated and contained many Buddhist symbols, a fact which remains to this day.
The Chinese used silver in their jewelry more often than gold, and decorated it with their favourite colour, blue. Blue kingfisher feathers were tied onto early Chinese jewelry and later, blue gems and glass were incorporated into designs. However, Chinese preferred jade over any other stone. They fashioned it using diamonds, as indicated in finds from areas in the country. The Chinese revered jade because of the human-like qualities they assigned to it, such as its hardness, durability and beauty.[2] The first jade pieces were very simple, but as time progressed, more complex design evolved. Jade rings from between the 4th and 7th centuries BCE show evidence of having been worked with a compound milling machine; hundreds of years before the first mention of such equipment in the west.[23]
In China, jewelry was worn frequently by both sexes to show their nobility and wealth. However, in later years, it was used to accentuate beauty. Woman wore highly detailed gold and silver head dresses and numerous other items, while men wore decorative hat buttons which showed rank and gold or silver rings. Woman also wore strips of gold on their foreheads, much like women in the Indus Valley. The band served a purpose like an early form of tiara and it was often decorated with precious gems. The most common piece of jewelry worn by Chinese was the earring, which was worn by both men and women. Amulets were also common too, often with a Chinese symbol or dragon. In fact, dragons, Chinese symbols and also phoenixes were frequently depicted on jewelry designs.
The Chinese often placed their jewelry in their graves; most Chinese graves found by archaeologists contain decorative jewelry.