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08 Mar 2008 09:04:17 | Sam Serio
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Without a doubt, Gold is one of the world’s most precious
metals. It is also a certainty that gold enjoys an unsurpassed
popularity as a medium for jewelry expression. Both jewelry
artisans and consumers alike are "in love" with gold. There
seems to be no end to the range of colors, finishes and styles
available and gold remains a perennial favorite setting for
gemstones. Gold can last forever, will not corrode or rust and
can be found anywhere. Gold exists in plants, rivers, oceans,
mountains, it’s nearly everywhere but it is extremely difficult
and costly to extract this amazing metal. Did you know that a
single ounce of gold can be pulled into a thin wire that
stretches nearly five miles long? An artisans hammer can work
that same ounce into a very thin sheet that can cover a 10ft x
10ft(100sq. ft.) area. Also, it takes nearly 3 tons of gold or
to extract a single ounce of pure gold. Well if you didn’t now
you know! Gold Basics The word Gold, used by itself, means all
gold or 24 karat (24K) gold. Because 24K gold is soft, it’s
usually mixed with other metals to increase its hardness and
durability. If a piece of jewelry is not 24 karat gold, the
karat quality should accompany any claim that the item is gold.
The karat quality marking tells you what proportion of gold is
mixed with the other metals. Fourteen karat (14K) jewelry
contains 14 parts of gold, mixed in throughout with 10 parts of
base metal. The higher the karat rating, the higher the
proportion of gold in the piece of jewelry. Most jewelry is
marked with its karat quality, although marking is not required
by law. Near the karat quality mark, you should see the name of
the U.S. registered trademark of the company that will stand
behind the mark. The trademark may be in the form of a name,
symbol or initials. If you don’t see a trademark accompanying a
quality mark on a piece of jewelry, look for another piece.
Solid gold refers to an item made of any karat gold, if the
inside of the item is not hollow. The proportion of gold in the
piece of jewelry still is determined by the karat mark. Jewelry
can be plated with gold in a variety of ways. Gold plate refers
to items that are either mechanically plated, electroplated, or
plated by any other means with gold to a base metal. Eventually,
gold plating wears away, but how soon will depend on how often
the item is worn and how thick the plating is. Gold-filled, gold
overlay and rolled gold plate are terms used to describe jewelry
that has a layer of at least 10 karat gold mechanically bonded
to a base metal. If the jewelry is marked with one of these
terms, the term or abbreviation should follow the karat quality
of the gold used (for example, 14K Gold Overlay or 12K RGP). If
the layer of karat gold is less than 1/20th of the total weight
of the item, any marking must state the actual percentage of
karat gold, such as 1/40 14K Gold Overlay. Gold electroplate
describes jewelry that has a layer (at least .175 microns thick)
of a minimum of 10 karat gold deposited on a base metal by an
electrolytic process. The terms gold flashed or gold washed
describe products that have an extremely thin electroplating of
gold (less than .175 microns thick). This will wear away more
quickly than gold plate, gold-filled or gold electroplate.
Vermeil (ver-may), a special type of gold plated product,
consists of a base of sterling silver that is coated or plated
with gold.
About Author :
For more information on jewelry and gemstones, we cordially
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