Silver has been known
and used for thousands of years and it is considered as
one of the three precious metals along with gold and
platinum. Pure silver is very soft metal with its
lustrous white color. Although it is harder than gold
and much more plentiful, but still too soft in its
natural state and required to be mixed with a harder
metal for the use in jewelry manufacturing. It ranks
second in ductility and malleability to gold. It is
normally stable in pure air and water but tarnishes when
exposed to ozone, hydrogen sulfide or sulfur.
Silver is the
brightest reflector of any metal (except for liquid
mercury) and can be polished to a high sheen that even
platinum can't achieve. It has also the highest
electrical and thermal conductivity of all metals, even
higher than copper. Most silver is produced as a
by-product of copper, gold, lead, and zinc mining.
Commercial grade fine silver is at least 99.9% pure
silver and purities greater than 99.999% are available.
Mexico is the world's largest silver producer which
contributed 15% of the annual production of the world.
Canada, Peru, Australia and the United States are the
other major countries, which are producing silver.
It has long been
valued as a precious metal and used in currency,
jewelry, ornaments, and utensils. Now-a-days, silver is
also used in photographic film, electrical contacts,
mirrors, dentistry and surgical implants.
Silver Purity
Purity of silver is
based on the other metals, which are available in the
silver in the form of metal alloys. Unlike gold, but
like platinum, silver purities are expressed as units of
a 1,000 parts. On the basis of its purity, it can be
described as below:
Pure / Fine Silver
It is the purest form
of silver with 99.9% purity. It is also known as fine
silver. In this form, silver is too soft to use for
jewelry.
Purity - 999 points
(99.9% pure silver)
Sterling Silver
Due to the softness
of pure / fine silver, it can not be used in its purest
form for jewelry. Therefore, to give strength and
durability to the pure silver, it is alloyed with other
harder metals, usually copper. A mixture of 92.5% of
pure silver and 7.5% of copper is known as Sterling
Silver. Sterling Silver is one of the most familiar and
used form of silver alloys. Purity - 925 points (92.5%
pure silver)
Coin Silver
A mixture of 90% pure
silver and 10% metal alloy is known as Coin Silver. A
process of melting down coins done in the 19th century,
and mostly discarded today. Purity - 900 points (90.0%
pure silver)
Mexican Silver
Sometimes silver from
south of the border is designated ‘Mexican silver’,
which consists anywhere from 90% to 99% pure silver.
Silver Pricing
Silver is very much
affordable metal and price of silver is very low as
compared to other precious metals. Silver is currently
about 1/50th the price of gold by mass. However, its low
price allows freedom to silver craftsmen for experiment
with new and innovative designs, which are later
duplicated in more expensive gold and platinum, once the
‘style’ is safely established