(20th & 21st Streets)
Bayonne, NJ 07002
Gold, element Au, was one of the first known metals. The gold standard
defines the world's currency system, whereby money represents a value in
Gold is an extraordinary and rare precious metal, with an unmatched
combination of chemical and physical properties. It is the only yellow metal
and the name gold derives from the Old English word for yellow, 'Geolu'.
Gold is the most non-reactive of all metals and it does not oxidize under
ordinary conditions, meaning that it will never rust and never tarnish. Gold's
physical properties of high electrical conductivity and chemical inertness
make it an excellent and reliable conductor, particularly in harsh
environments, where temperatures can range from -55°C to 200°C. No
other metal is as malleable as gold. A single ounce of the metal can be
drawn into a wire five miles long. Gold is also an excellent conductor of
thermal energy. Due to all these specialties, gold is used in various other
industrial applications along with jewelry manufacturing.
Gold is widely dispersed through the Earth's crust and is found in two types
These are found in solid rock form and are mined by using conventional
These are gravelly deposits found in stream beds and are the products of
eroding lode deposits. Since gold is found uncombined in nature, early
goldsmiths would collect small nuggets of gold from stream beds etc., and
then weld them together by hammering.
Gold's purity is measured in karats. The term ‘Karat’ is different from the
term ‘Carat’, which is used to measure weight in gemstones. The purity of
gold in karat determines its value. The term ‘Karat’ is derived from ancient
bazaars where ‘Carob’ beans were used to weigh precious metals.
Pure gold is very soft and pliable, and alloys of different precious metals
are combined with pure gold to enhance its durability and strength, as well
as creating a blush in the gold’s appearance with different color tones. 24
karat is 100 % pure gold, and is more expensive and less durable than gold
that is alloyed with other metals.
Gold purity for the mostly used Karats:
24 Karat - 24K Gold with 100% purity
22 Karat - 22K Gold with 91.6% purity
18 Karat - 18K Gold with 75% purity
14 Karat - 14K Gold with 58.33% purity
12 Karat - 12K Gold with 50% purity
10 Karat - 10K Gold with 41.67% purity
24 karat gold is soft pure gold without any alloys and it has a deep yellow
color and a rich luster. Gold of lesser karats (22K-10K) are all alloyed with
a combination of silver, copper, nickel and zinc. This adds strength, but if
too much is added (in the case of 10K and less) it can dull the color. For
beauty and durability, 14K and 18K gold are highly recommended.
In its pure form, gold has a metallic luster with deep yellow in color, but
when mixed or alloyed with other metals, such as silver, copper, zinc,
nickel, platinum, palladium, etc. then it creates various color hues like white,
pink/ rose, green and the seldom found blue, purple and black.
Yellow gold is the most frequently seen and a timeless color. It is usually
alloyed with silver and copper. Depending on the karat gold (14K, 18K or
22K), the color of yellow gold may vary from a softer shimmering yellow to
a bright rich yellow. This is due to the varying alloy combinations. The color
contrast of yellow gold is most suitable to diamonds and other delicately
colored gemstones, as they can appear brilliant and vivid.
White gold is harder than yellow gold with a bright lustrous white color. It is
most commonly alloyed with a significant percentage of silver, or a mixture
of other white precious metals. Palladium and nickel are other precious
metals which are alloyed to create white gold. Due to the presence of
nickel in the white gold alloy, it tends to be harder than yellow gold. The
percentage of gold naturally varies, according to the quantity of additional
precious metal, which is included in the formulation of the alloy. White gold
is highly reflective and not subject to tarnish.
Pink / Rose Gold
Pink / Rose gold is alloyed with copper, and at times possibly even with
silver. The proportions are about three parts of 24-karat gold to one part of
copper. These alloys blush and accentuate the gold with a pink hue, which
varies in color depending upon the amount of copper blended with the pure
gold. The quantity of copper determines whether the gold is pink or more
rose colored in tone and highlights.
Pure gold is mixed with silver to get green gold. Although this color is not
very popular but still it gives wearer an opportunity to look different.
Other Gold Colors
To get the blue or black colors, iron is alloyed with pure gold whereas to
get purple color, pure gold is alloyed with specific percentages of aluminum,
tin, and thorium.
Some examples of alloying formulas to achieve gold color variances are:
18K Yellow Gold: 75% fine gold, 15% copper, 10% fine silver.
14K Yellow Gold: 58.5% fine gold, 29% copper, 12.5% fine silver.
18K White Gold: 75% fine gold, 2 % copper, 17% nickel, 6% zinc.
14K White Gold: 58.5% fine gold, 23% copper, 12.5% nickel, 6% zinc.
18K Green Gold: 75% fine gold, 25% fine silver.
18K Pink/Rose Gold: 75% fine gold, 25% copper.
Raw, un-worked gold pricing is based on the karat ratio and the gold
weight. But Gold pricing, in finished jewelry or decorative item, is based on
a number of factors, including karatage, gram weight, design and
craftsmanship. The techniques of construction can make a piece more
durable and flexible for added comfort and it may increase the gold price
for that piece. Gold jewelry is mainly produced by machine. Any additional
hand finishing or textural interest may also raise the cost.
Solid gold is the most frequently seen gold type available in the market but
buyers should also be aware of the other gold types available, which deliver
comparable beauty at lower value. Naturally, the higher the gold proportions
or weight in the other types, the more expensive they are:
It is also known as gold overlay, and refers to a layer of at least 10-karat
gold that has been permanently bonded by heat and pressure to one or
more surfaces of the support metal, then rolled or drawn to a prescribed
thickness. The karat gold must be at least 1/10 of the total weight.
Gold Plate refer, a thin layer of plating of 10-karat gold or better which has
been bonded to a base metal. The karat gold content may be less than
1/20, but it must be properly identified by weight in terms of total metal
Gold Leaf refers, ultra thin gold plating which is pounded and applied by
hand to an object. Gold has helped in shaping the course of human history.