is one of the metals taken from the earth and
is probably the first metal known to man. Its
first use has been traced back to 3600 B. C.
and was probably originally obtained in Egypt,
as the ancient methods of obtaining gold in
Egypt are illustrated in early rock carvings.
It is said in the book of Genesis that Abraham,
in the twentieth century B. C., when he went
out of Egypt, was very rich not only in cattle
but in gold and silver both in dust and ingots.
In Exodus xxv, 29, we read that Moses was commanded
by the Lord to make spoons of gold for the Tabernacle.
In the writings of Homer, Sophocles, Herodotus,
Pliny and others, gold is frequently mentioned.
Gold is widely
distributed in nature and is found in many ways
and in all parts of the world. It is found in
water, in the ice of Alaska, in the sand of
South Africa, and in the quartz of Colorado,
and is frequently found native, though usually
alloyed with silver or iron. The purest specimens
of native gold have yielded from 96 to 99 per
cent, pure metal.
remarkable that all of the races of mankind
have selected gold as the first and chief representative
of value. In the earliest times it was used
as a medium of exchange in the form of bars,
spikes and rings; the rings could be opened
and closed so that a chain could be made for
convenience in carrying. Gold was also used
at a very early period for the construction
of personal ornaments, as the savage found it
easy to beat out the pure ore into circlets
to adorn his limbs. The universal use of gold
in preference to all other metals is due to
its many properties; its color and luster, its
malleability and its indestructibility. Gold
does not tarnish nor can it be destroyed. It
may be reduced to a liquid and the liquid transferred
to a powder, and the powder when melted in a
crucible returns to its natural state. It is
the most malleable of all metals and has been
hammered into leaves 1-282,000th of an inch
thick. An ounce of gold may be drawn out into
a wire fifty miles long. The tenacity of gold
is seven tons per square inch.
gold, being too soft for all ordinary purposes,
is generally alloyed with other metals. Silver
and copper are the principal alloys used, although
iron is used in small quantities for different
purposes. Pure silver has a brilliant white
color and is the whitest of all metals. No metal
surpasses silver in its luster and hardness
it ranges between pure gold and pure copper.
It is more fusible than copper or gold, melting
at a bright red heat or at 1873F. It is commonly
used for the purpose of alloying gold in its
pure state, but if too much is added it makes
the gold pale. Pure copper is the only metal
that has a reddish appearance. It is both malleable
and ductile; hence it is very useful as an alloy
about Gold Jewelry :
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
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!
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
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.
jewelry is marked with its karat quality, although
marking is not required by law, but shall soon
become a mandate for all jewelers, and is known
as BIS marking.
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.
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 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.
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
(ver-may), a special type of gold plated product,
consists of a base of sterling silver that is
coated or plated with gold.